Answer:
We are comparing two traits.
Explanation:
These are four alleles of two traits (height and color).
In humans, the allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l). The allele for free earlobes is dominant (E) and the allele for attached earlobes is recessive (e).
A man homozygous recessive for both traits has children with a woman who is homozygous dominant for long eyelashes, and homozygous recessive for earlobes.
What are the phenotype ratio possibilities for any children they produce?
a. 8 long and free, 8 long and attached
b. 4 long and free, 4 long and attached, 4 short and free, 4 short and attached
c. 9 long and free, 3 long and attached, 3 short and free, 1 short and attached
d. 16 long and attached
The phenotype ratio possibilities for any children they produce is 8 long and free, 8 long and attached; the correct option is A.
What are recessive alleles?Recessive alleles are alleles that are encoded by recessive genes.
Recessive alleles do not appear phenotypically except when the dominant allele is absent. Hence, recessive alleles only appear in an offspring that is hom0zygous for the given recessive allele.
Hom0zygous means that the two copies of the allele are the same for that trait, either they are hom0zygous dominant or hom0zygous recessive.
Considering the given question:
the allele for long eyelashes is dominant (L) and the allele for short eyelashes is recessive (l) in humans and the allele for free earlobes is dominant (E) and the allele for attached earlobes is recessive (e).
A man homozygous recessive for both traits has children with a woman who is homozygous dominant for long eyelashes and homozygous recessive for earlobes.
Genotype of the man = llee
Genotype of the woman = LLEe
The offspring produced will be llee x LLEe = LlEe, Llee, LlEe, Llee, LlEe, Llee, LlEe, Llee, LlEe, Llee, LlEe, Llee, LlEe, Llee,
The phenotype ratio is:
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Which statement accurately describes evolution?
A. Evolution cannot occur without genetic drift.
B. Evolution cannot occur without natural selection.
C. Evolution is the change in the genetic makeup of a population over time.
D. Evolution occurs when favorable adaptations are passed on to future generations.
The statement evolution occurs when favorable adaptations are passed on to future generations describes evolution (Option D).
What are evolutionary phenotypic adaptations?The expression evolutionary phenotypic adaptations make reference to certain features in the organism that confer an advantage in a particular environment, thereby they are selected via natural selection in order to form the next generation in the population.
Therefore, with this data, we can see that evolutionary phenotypic adaptations are essential because they will have a differential survival and reproduction in order to generate the next generation of individuals in the population.
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How do you determine the number of phenotypes?
The no. of phenotypes can be determined by we have a take a observe the alleles of the figure organisms and estimate how frequently the ones genes may be exhibited through the offspring.
Since every figure has 4 one of a kind mixtures of alleles withinside the gametes, there are 16 feasible mixtures for this cross.
There is various phenotypes, however maximum of the offspring are comparable in shadeation to the parents. If n = the quantity of gene pairs, then (2n + 1) will decide the whole quantity of classes of phenotypes. To discover a phenotypic ratio , Most times, we understand what the alleles will explicit and the way they may look.
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Scientific Method
Define the following:
a. Indegendent Variable:
b. Dependent Variable:
c. Control Variable:
d. Controlled experiment
e. Hypothesis:
1. You have measured the rate at which a fish breaths at various temperatures by courting the rate at which its gills open. The data table is shown below. Create a line graph depicting the results
a. What is the independent variabie? why
b. The dependent variable? Explain whiy.
c. What happens to breathing rate with increase in temperature?
d. Identity at least 3 control variabios in this experiment.
e. What do you think would happen if you raised the temperature even more? Why would it be a bad ides to do this?
Biochemistry
2. Fill in chart below.
The independent variable is expected to influence the dependent variable. The dependent variable is what happens as a result of the independent variable. A control variable is one that is held constant or finite in a research study. In a controlled experiment, all variables except the independent variables are controlled or held constant so as not to affect the dependent variable. A hypothesis is a proposed explanation for a phenomenon.
Why are hypotheses important in research?A hypothesis is an idea put forward for the purpose of discussion, that can be tested to see if it is true.Hypotheses not only allow researchers to discover relationships between variables, but they can also predict relationships based on theoretical guidelines and empirical evidence.Hypothesis formulation requires a thorough understanding of the research topic and a comprehensive review of the previous literature.How do you identify your hypothesis?Step 1: State your null and alternative hypotheses.
Step 2: Collect data.
Step 3: Conduct statistical tests.
Step 4: Decide whether to reject the null hypothesis.
Step 5: Present the findings.
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What is the only way that
any two humans could
have identical DNA?
A. if they are related
B. if they are twins this
C. if they have the same genetic disease
D. if they came from the same mother
Answer: B, if they are twins
Explanation: The only possible 100% DNA match is found when you have the EXACT same genes as someone else, which can only be found in identical twins.
What is the correct order of events in mitosis ?
Prophase, Metaphase, Anaphase, & Telophase are the proper phases of Mitosis.
A single cell divides into 2 daughter cells during the mitotic process. Two main processes make up mitosis: cytokinesis, or cytoplasm division, and karyokinesis, or nucleus duplication.
The separation of the daughter cells comes next. Prophase, Mitotic phase, Anaphase, & Telophase are the four phases of Karyokinesis.
Prophase: During prophase, chromosomes may be seen, centrioles can move to the poles, the nucleolus and nuclear membrane disappear, and spindle configuration takes place. Chromosomes align completely around the center during metaphase. Chromatids separate during anaphase and go to the opposing poles through spindle fibers. This makes it possible for every daughter cell to possess a replica of each chromosome from the mother cell. Chromosomes disappear during the telophase, during which the nuclear membrane repairs, nucleoli resurface, the spindle disappears, and centrioles divide.To know more about mitosis at
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Why does the precipitation from a warm front last longer than that from a cold front?
Warm fronts produce stronger storms than cold fronts.
Warm fronts have shallow slopes and are slower moving than cold fronts.
Warm fronts will often sit in one place for a long period of time.
Warm fronts transport more moisture than cold fronts.
The precipitation from a warm front last longer than that from a cold front because warm fronts have shallow slopes and are slower moving than cold fronts which is therefore denoted as option B.
What is Precipitation?This is usually in the form of liquid and frozen water and it is caused by the condensation of atmospheric water vapor that falls under gravitational pull from clouds.
Precipitation from a warm front have shallow slopes and are slower moving than cold front which is therefore the reason why it lasts longer hence option B is referred to as the correct choice.
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Answer: It is B
i tried to send a screen shot for proof but it didn't work buut it's for sure B
how many genes are in a chromosome
There are 46 chromosomes in all, or 23 pairs, in each typical human cell.
The most significant class of substance in the body is likely proteins. Proteins serve as more than only the building blocks for skin, connective tissue, muscles, and other organs. The production of enzymes also requires them. Nearly all chemical reactions and functions in the body are controlled and carried out by sophisticated proteins called enzymes. There are thousands of distinct enzymes that the body makes. As a result, the kinds and quantities of proteins the body synthesises control the overall structure and operation of the body. Genes, which are found on chromosomes, regulate the production of proteins.
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Which property is shared by the cells of all living things quiz?
All living things cell show the property of growth, reproduction, internal or external cell movement and energy.
1. All cells show growth, where it increases in size and number. Growth occurs throughout the lifespan.
2. Cells also show reproduction, mostly cell do it by mitosis where 1 parent cell give rise to 2 daughter cell and 2 give rise to 4.
3. Cell also shows both external or internal movements, like externally flagella, cilia etc. and internally by the means of cytoplasm.
4. synthesis of ATP is done by cells for energy production. Energy by cells is needed to function normally and show the above living characteristic.
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When using the three compartment sink items must be immersed in the sanitize sink for seconds?
The water temperature must be at least 171°F and the items must remain submerged for a minimum of 30 seconds.
Rinse, scrape or soak all items before washing.Wash items in the first sink in a detergent solution. Use a brush, cloth or scrubber to loosen and remove soil. The water temperature in the first compartment should be at least 110°F. Use a thermometer to check the water temperature. Replace the detergent solution when the suds are gone or when the water appears dirty.Rinse the washed items in the second compartment by either immersing them in clean rinse water or by spraying them. Make sure all traces of food and detergent are removed. The water temperature in the second compartment should also be at least 110°F.To sanitize the washed and rinsed items, immerse them in hot water in the third compartment. If you are going to use a hot water rinse, the water temperature must be at least 171°F and the items must remain submerged for a minimum of 30 seconds. If you use a chemical sanitizer, the sanitizer must be mixed at the proper concentration. Follow the manufacturer’s directions to ensure proper concentration. All washed, rinsed and sanitized items should be placed on a clean drainboard to air dry.To learn more about three compartment sink visit here:
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Where is pure protease digested?
The central location where proteases digest proteins is in the small intestine. The pancreas releases numerous proteases as zymogens into the duodenum.
The pancreas releases proteases into the proximal small intestine, where they combine with proteins that gastric secretions have already altered and convert them into amino acids, the building blocks of protein, which are then absorbed and utilized by the body. Proteases can be obtained from microbial, plant, or animal sources. Chymotrypsin, pepsin, renin, and pancreatic trypsin are examples of animal proteases. Enterokinase is secreted from the top small intestinal epithelium in response to meals, and this enzyme catalyzes the protease cascade in the small intestine. Pancreatic pro-proteases are transformed into active enzymes by the enzyme catalyzer enterokinase.
Thus, we can conclude that the small intestine is the primary site where proteases digest proteins.
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what happens to the cftr gene in cystic fibrosis
A buildup of sticky mucus results from mutation in the CFTR gene that impair or prevent the production of the CFTR protein, which in turn causes recurrent lung infections, pancreatic damage, and difficulties in other organs.
A recessive illness is one such as cystic fibrosis. About 70% of individuals with CF have the most prevalent CFTR mutation, F508del. This mutation results from of the loss of three dna bases from the CFTR gene, which causes the CFTR protein to lose the amino acid phenylalanine, also known as amino acid F. F508del, the most prevalent CF mutation, is generally thought to be a reprocessing mutation. The CFTR protein loses one amino acid due to the F508del mutation. The CFTR protein could maintain the right 3-D structure without this component. The heterogeneous multiorgan illness known as cystic fibrosis (CF) is brought on by mutations inside the CFTR gene that result in the misfolding (and other abnormalities) and subsequent malfunction of the CFTR protein.
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What is protease enzyme used for?
Protein is broken down by proteolytic enzymes, or proteases.
Animals, plants, fungi, and bacteria make these proteolytic enzymes. Proteins are broken down by proteolytic enzymes in the body or on the skin. This might aid in digestion or the breakdown of proteins that cause pain and swelling. Bromelain, chymotrypsin, pepsin, papain, serrapeptase, and trypsin are a few examples of proteolytic enzymes that can be found in supplements.
A common chemical reaction is effectively carried out by proteases: the breakdown of peptide bond hydrolysis. The majority of proteolytic enzymes break α-peptide bonds between naturally occurring amino acids, but some proteases do things a little differently.
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What are the three 3 types of chronological order?
The three types of chronological orders are: Chronological, Sequential, and Consecutive.
Chronological order is the one where things are arranged one after the other in the sequence in which they occurred. It is considered to be the easiest pattern in orders. Chronological order is considered similar to going down the stairs.
Sequential order is the type of order in which things are arranged according to numbers or alphabets. It is the step-by-step directions of any event or situation from the first step to the last one. It is different from chronological order as chronological order is more concerned with time.
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How does a plant or animal response to infection?
The plant and animals response to infection in the way as they have immunities buillt in them.
Both flora and animals (together with bugs and mammals) have an innate immune device, which allows guard hosts from the bulk of microbes they come across at some point of their lifetime. Plant and animal innate immune structures understand an overlapping set of conserved microbe-related molecular patterns (MAMPs).
Both flora and animals are endowed with a conserved innate immune device capable of neutralize pathogens and to include the infection. It makes use of specialised receptors to discover microbial patterns, pathogen-derived compounds, and hazard indicators and elicits an tailored response.
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How often should flea treatment be given?
Flea treatment should be given as often as every few days to every few weeks.
Flea, the common call for the order Siphonaptera, consists of 2,500 species of small flightless insects that stay as external parasites of mammals and birds. Fleas live by way of consuming the blood of their hosts.
However, the flea species that usually trouble puppies and cats don't stay on humans. Dogs and cats have much extra hair than human beings. Fleas like animals with a whole lot of fur due to the fact that fur lets them cover easily.
When searching out meals, there are a number of factors that could assist a flea hit upon a suitable host however they're broadly speaking attracted to visual and thermal stimuli.
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gives off carbon dioxide
Researchers grew seedlings of corn, Zea mays, in loose and compact sand. The researchers measured the amount of time required for the cells in the growing root tips of the seedlings to double in number. The mean cell doubling times for the two groups of seedlings are shown in Figure 1.
Figure 1. Mean cell doubling times for the growing root tips of Zea mays seedlings planted in loose or compact sand
Based on the sample means, which of the following conclusions about the cells in the growing root tips of Zea mays seedlings is best supported by the results of the experiment?
answer choices
The cells of the root tips grow to larger sizes when the seedlings are planted in compact sand than when the seedlings are planted in loose sand.
The average rate of mitotic cell division is greater for the root tips growing in loose sand than for the root tips growing in compact sand.
The average cell cycle time is greater for the root tips growing in compact sand than for the root tips growing in loose sand.
More cells are produced per unit of time in the root tips growing in compact sand than in the root tips growing in loose sand.
The conclusion that supports the result of the experiment is; More cells are produced per unit of time in the root tips growing in compact sand than in the root tips growing in loose sand, last option.
What does "mean cell doubling time" mean?Mean cell doubling time for a Zea mays is the amount of time it takes cells from the growing root tips of the seedling to increase by double.
According to the graph, the mean doubling time of the seedlings' root tips used in the compact sand is lower than that used in the loose sand. This decrease means that there is an increased rate of mitosis for cells in the compact sand.
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What are the three types of fragmentation?
The three types of fragmentation are There are 3 exclusive however associated varieties of fragmentation: outside fragmentation, inner fragmentation, and facts fragmentation, which may be found in isolation or conjunction.
Fragmentation is frequently familiar in go back for upgrades in pace or simplicity Internal fragmentation happens while the reminiscence is shipped into fixed-sized blocks. If the reminiscence allotted to the manner is barely large than the reminiscence demanded, then the distinction among allotted and demanded reminiscence is referred to as inner fragmentation.
External fragmentation happens every time a technique of dynamic reminiscence allocation takes place to allocate a few reminiscence and go away a small quantity of unusable reminiscence. The overall amount of the reminiscence to be had is decreased appreciably in case there is an excessive amount of outside fragmentation.
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!!! NEED ASAP !!! If you give me the correct answer I'll give you brainliest!!!!
An experiment to investigate the influence of music on plant growth is set up according to the design shown in the table. Each plant group contains 20 plants.
Which statement explains how the experiment exhibits bias?
The statement that explains how the experiment exhibits bias is that variables other than music can influence the result. Option A.
What are experimental biases?Experimental biases refer to the introduction of biases into research investigation either knowingly or unknowingly. It includes any form of error in experiments that is attributable to a researcher’s behavior, preconceived beliefs, expectancies, or desires about the outcomes of experiments.
Experiments generally have an independent variable supplied by the researcher while the dependent variable is measured during the course of the experiment. The dependent variable is determined by the independent variable.
In this case, the dependent variable is plant growth while the independent variable is supposed to be the different types of music. All other variables are supposed to be kept constant so as to be able to isolate the effects due to the type of music only.
However, it appears that the environments where the plants are kept are not the same. Thus, it is impossible to know whether the growth behavior observed in the experimental plants is due to the music or the environment they were placed.
In other words, a biased is introduced which may make a variable other than the type of music influence the plant's growth.
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What is the X shaped structure in DNA?
When DNA wraps around nuclear proteins and then repeatedly wraps around itself to compress the DNA into a smaller volume, a complex known as chromatin is created.
The term "chromatin" describes the DNA and protein mixture that makes up the chromosomes found in the cells of humans and other higher creatures. The enormous amount of DNA in a genome is packaged by many proteins, most notably histones, into a shape that can fit inside the cell nucleus. Chromatin. The length of all the DNA in a cell, which ranges from 5 to 6 feet, must fit neatly inside the nucleus of a cell. The histone proteins are initially wrapped by DNA molecules to form nucleosomes, which are structures that resemble beads on a string. The fibrous substance known as chromatin is made up of condensed/gathered nucleosomes that have gone further [inaudible]. For DNA transcription and replication, chromatin fibers can unwind. When cells divide, replicated chromatins further condense to become numerous.
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explain how you determined that claire had low enzyme production
Claire had low enzyme production because the side groups of the amino acids are creditably to effect for the pH dependence.
In many extreme conditions, a pH change may results in protein denaturation by changing the protonation pattern.
Hence, Side groups of the amino acids are generally responsible for the pH dependence, Claire's production of enzymes was low. In severe cases, a pH change can denature proteins by changing the pattern of protonation. Deficiency in Enzyme may also cause accumulation of toxic compounds that may affect normal functioning of organs and can cause failure in producing crucial biological compounds and other intermediates.
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What is the difference between cell differentiation and cell growth?
Cell differentiation is the procedure that leads to cells' functional specialized.
Explain the difference between cell differentiation and cell growth?It is known that cells specialize through a process called cell differentiation. Pluripotency, which can be shown in stem or progenitor cells at the start of the differentiation process, refers to the capacity to develop into any form of cell.The process that results in an increase in cell population is called cell proliferation. It happens as a result of cell division and expansion. On the other hand, the process that leads to a cell's functional specialization is called cell differentiation. It happens as a result of controlling gene expression.The process of cellular differentiation causes cells to take on their final morphology and physiology throughout development and adulthood. Unspecialized cells become specialized through the process of differentiation to perform specific functions.Learn more about cell differentiation and cell growth refer to :
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What is it called when a trait is passed down from generation to generation?
When the traits are passed onto the generation to generation is called as inheritance.
Inherited, as associated with genetics, refers to a trait or editions encoded in DNA and handed from figure to offspring in the course of duplicate. Inheritance is decided through the regulations of Mendelian genetics
Heredity, additionally referred to as inheritance or organic inheritance, is the passing on of trends from dad and mom to their offspring; both via duplicate or duplicate, the offspring cells or organisms collect the genetic statistics in their dad and mom.
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Which drugs stimulate or activate the central nervous system?
Psychedelic stimulants include substances like caffeine, cocaine, and other amphetamines. These drugs are designed to alleviate drowsiness and exhaustion while increasing mental clarity.
The central nervous system is stimulated by drugs known as stimulants. Drugs have an impact on how neurons send, receive, and process signals using neurotransmitters. Some drugs, including heroin and marijuana, have the ability to activate neurons because their chemical structures are comparable to those of the body's natural neurotransmitters. This makes it possible for the drugs to attach to and activate the neurons. The neurological system's ability to function normally can be compromised by prolonged drug use. It can disrupt the function of vital organs, damage nerves and tissues, cause brain damage, and obstruct neural communication due to addictiveness of Caffeine. Stimulants are a class of medications that stimulate the central nervous system (sometimes known as uppers).To know more about Caffeine check the below link:
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In this assignment, you will create a poster with an illustration that models stem cell division and
differentiation. Your poster should include a title, an illustration, and brief descriptions of stem cells, stem
cell division and differentiation, and the role of specialized cells in complex organisms, such as humans.
You will also type one to two paragraphs summarizing the information from your poster.
Background Information
A stem cell is a cell from which new cells with specialized functions are formed. Stem cells divide by
mitosis to produce new cells that serve one of two purposes. One purpose is self-renewal. Through this
process, stem cells divide and create more stem cells. The other purpose is differentiation. This occurs
when a stem cell divides and one daughter cell retains stem cell properties while the other creates a
specialized cell such as a heart cell, skin cell, or brain cell.
Answer:
!
Explanation:
What are the main reasons mitosis is important?
Mitosis is essential in multicellular organisms because it generates new cells for growth and replaces worn-out cells, such as skin cells.
Mitosis is the primary mode of asexual reproduction for many single-celled organisms. Mitosis is the procedure of asexual reproduction in single-celled organisms. Mitosis aids in the repair of damaged tissues. When the cells near the damaged cells cannot sense the neighboring cells, they begin mitosis. The separating cells interact between themselves and cover the injured tissue. Mitosis is significant for three reasons: Asexual reproduction, cell replacement, and development and growth.
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What are three facts about chromosomes?
Each chromosome is made up of a lengthy DNA thread that connects hundreds of genes. The 46 chromosomes found in cells are divided into 23 pairs. Your mother and father each contribute one chromosome to each pair that you have.
Our genes are the chemical codes that govern every aspect of your body's function, composition, and appearance. Over 20,000 distinct genes chromosomes exist in humans. Every gene in your body is duplicated in every cell.
Your body's smallest building blocks are called cells. Your organs are made up of several cell kinds. Your brain has neuron cells, your liver contains liver cells, and your stomach contains cells that produce stomach acid. Genes regulate the development and function of every cell.
One gene alone is responsible for some bodily functions. But many genes work together to control the majority of things, like your height and weight.
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Where are the 3 checkpoints in the cell cycle?
G1 checkpoint is near the end of G1 (close to the G1/S transition). G2 checkpoint is near the end of G2 (close to the G2/M transition). Spindle checkpoint is partway through M phase, and more specifically, at the metaphase/anaphase transition.
Mitosis, also known as the M phase, is the process of making two identical daughter cells through cytokinesis and nuclear division. Two daughter cells that are diploid are created as a result of cell division and mitosis (M). M phase refers to either mitosis or cell division (also known as cytokinesis), whereas G1, S, and G2 refer to the other three stages.
A stage of cell division is called metaphase (mitosis or meiosis). Typically, each chromosome is dispersed throughout the cell nucleus. In metaphase the process of dividing, a cell's chromosomes compress and travel toward the center while the nucleus disintegrates.
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How many pairs of DNA are in the human genome?
Answer: 3 billion base pairs
Explanation:
