Inherited characteristics are passed on through generations via the transfer of genetic information from parents to offspring. This genetic information is encoded in DNA, organized into genes, and carried on chromosomes.
How are inherited characteristics passed on through generations?Inherited characteristics are passed on through generations via the transmission of genetic information from parents to offspring. This genetic information is contained within molecules called DNA (deoxyribonucleic acid), which is located in the cells of organisms. The process of passing on inherited characteristics is known as heredity, and it occurs through the following mechanisms:
Genes and Alleles: Genes are segments of DNA that code for specific traits or characteristics. Each gene has different forms called alleles. These alleles can vary and determine the variations in traits among individuals.
Chromosomes: DNA is organized into structures called chromosomes. Humans have pairs of chromosomes, with one member of each pair coming from each parent. Each chromosome contains numerous genes.
Gamete Formation: In sexual reproduction, special cells called gametes (sperm and egg cells) are formed through a process called meiosis. During meiosis, the genetic material is shuffled and divided, creating gametes with a unique combination of genetic information.
Fertilization: When two gametes (sperm and egg) fuse during fertilization, they combine their genetic material, resulting in a new individual with a mix of genetic traits from both parents.
Dominant and Recessive Traits: Some traits are governed by dominant and recessive alleles. Dominant alleles mask the presence of recessive alleles. The combination of alleles determines the expression of traits in offspring.
Mendelian Inheritance: The principles of inheritance were first described by Gregor Mendel, and they involve the segregation and independent assortment of alleles during gamete formation and fertilization.
Genetic Variation: Sexual reproduction and the shuffling of genetic material during meiosis create genetic variation among offspring. This variation is essential for populations to adapt to changing environments over time.
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Why might an individual with AIDS have difficulty fighting off otherwise harmless infections?
Answer:
Having HIV/AIDS weakens your body's immune system. It destroys the white blood cells that fight infection. This puts you at risk for opportunistic infections (OIs). OIs are serious infections that take advantage of your weak immune system.
Explanation:
Match the organelle (1-4) with the correct description (5-8). 1) mitochondrion 5) synthesizing molecules 2) centriole 6) liquid in cell 3) endoplasmic reticulum 7) provides cell with energy 4) cytosol 8) aids the formation of the spindle apparatusA) 1 and 5, 2 and 6, 3 and 7, 4 and 8 B) 1 and 7, 2 and 6, 3 and 8, 4 and 5 C) 1 and 7, 2 and 8, 3 and 5, 4 and 6 D) 1 and 8,2 and 5, 3 and 6, 4 and7 E) 1 and 6, 2 and 8, 3 and 5, 4 and7
Answer:
C) 1 and 7, 2 and 8, 3 and 5, 4 and 6
Explanation:
1 and 7: 1) mitochondrion; 7) provides the cell with energyThe mitochondrion is the organelle that produces the energy that the cell needs for its functions. It synthesizes adenosine triphosphate (ATP), which storages large quantities of energy in its bonds.
2 and 8: 2) centriole; 8) aids the formation of the spindle apparatusThe centrioles have a crucial role during mitosis. They form the spindle apparatus that attaches to the chromosomes, moving them to the opposite poles of the cell.
3 and 5: 3) endoplasmic reticulum; 5) synthesizing moleculesThe endoplasmatic reticulum is a continuous membrane connected to the nuclear membrane. There are two types, the Rough Endoplasmatic Reticulum (RER) and the Smooth Endoplasmatic Reticulum (SER). The first one synthesizes proteins, while the second one synthesizes lipids.
4 and 6: 4) cytosol; 6) liquid in the cellThe cytosol is the liquid that is inside the cell. It is mostly water, but it also has ions and molecules. It is important for the transport of substances.
The correct match between organelles and their description is - Option C. 1 and 7, 2 and 8, 3 and 5, 4 and 6.
In the cell, there are many organelles that perform different and specific functions essential for the cell to survive. These organelles help in synthesizing molecules, energy production, cell division, and many others.
Mitochondrion: it is a cell organelle that is the site of cellular respiration, which is a process that breaks the sugar molecule and releases a high amount of energy in the form of ATP. Therefore, it is known as the powerhouse of the cell. Thus, correctly matches with 7) provides the cell with energyCentriole: It is organelles that help to form the spindle during the cell division in the cell that makes the region at the poles where spindle fibers form. Thus, it correctly matches with 8) aids the formation of the spindle apparatus.Endoplasmic reticulum: It is organelles that synthesize various molecules such as hormones and other protein molecules, Rough ER has ribosomes attached to it that synthesize proteins. Thus, correctly matches with 5) synthesizing moleculesCytosol: It is a semi-fluid-like substance made up of a lot of water, dissolved ions, smaller minute molecules, and proteins. It has filled in the interior cellular space. Thus, the correctly matches with 6) liquid in the cell.Thus, the correct answer is - Option C.
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What is the most likely explanation for the results in the graph?
O A. The plantlike organisms are using up all the oxygen that the fish
need.
B. The apple orchard releases toxic chemicals into the water of the
bay.
C. The nitrogen from the fertilizer makes it impossible for plants to
grow
D. The fish have migrated away from the bay to find warmer water,
SUBMIT
Answer:
B. The apple orchard releases toxic chemicals into the water of the bay.
Explanation:
Option B is the correct answer. It is the most likely explanation for the results in the graph.
From the graph, we can see that the population of the fishes sharply dropped. Since the fertilizer is applied to the apple orchard and the orchard was planted beside the bay, during the rain it is possible that the water has washed some of the fertilizers into the bay. The chemicals used in making fertilizer are harmful and toxic.
This reveals that the toxic chemicals released from the apple orchard are responsible for the decline in the population of the fish.
Pleasssee helepppppp
g Cerebrospinal fluid formed in the lateral ventricles travels through the ________ to reach the third ventricle.
Answer: Interventricular foramen
Explanation:
The cerebrospinal fluid is a fluid that covers the brain and spinal cord. It circulates through the subarachnoid space, the cerebral ventricles and the ependymal canal. Several diseases alter its composition and its study usually detects meningeal infections, carcinomatosis and hemorrhages. Some of its functions are:
Hydropneumatic support against local pressure for the encephalon.Eliminates metabolites from the central nervous system.Protects the central nervous system from trauma.This fluid also fills the ventricles, which are large open structures deep within the brain and help keep the brain buoyant and cushioned. The lateral ventricles are the largest ventricles and connect to the third ventricle through the intraventricular foramen. This third ventricle is a narrow, medial cavity located between the diencephalic masses. Then, the interventricular foramina are channels that connect with the ventricles of the lateral walls and with the third ventricle, at the level of the midline of the brain. Like these channels, they allow cerebrospinal fluid to circulate through the rest of the ventricular system of the brain. The walls of the foramina also contain choroid plexuses, responsible for the production of cerebrospinal fluid, which continue in both the lateral ventricles and the third ventricle. After reaching the third ventricle, the cerebrospinal fluid travels through the median aperture into the subarachnoid space at the base of the brain.
True or false ? Pioneer species are typically replaced by other species over time
True
False
Hemophilia is inherited in humans as an X-linked recessive condition. A phenotypically normal woman whose father was hemophiliac marries a normal man. What is expected among their offspring?
Answer:
100% of the girls are expected to be normal, X+X+ and X+X-50% of the boys are expected to be normal, X+Y50% of the boys are expected to be hemophilic, X-Y75% of the whole offspring normal (X+X+, X+X-, X+Y)25% of the whole offspring hemophilic (X-Y)Explanation:
Due to technical problems, you will find the complete explanation in the attached files
The density of protists living in the hay infusion is ______________ than the regular pond water.
a. significantly lesser
b. lesser
c. about the same
d. greater
e. significantly greater
Answer:
a. significantly lesser
Explanation:
The density of protists living in the hay infusion is significantly lesser than the regular pond water because protists likes to live in aquatic or any water bodies. Some protists float on the surface of the water making their own food like plants by using the process of photosynthesis. Aquatic environments are ideal environment for protists, which have cilia and flagella that allows them to move in the water in search of food..
Explain the importance of nitrogen-fixing bacteria?
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Nitrogen-fixing bacteria fix atmospheric nitrogen to ammonia, which can then be taken up by plants.
The process is called biological nitrogen fixation. Rhizobium, Azotobacter, cyanobacteria are some examples of nitrogen-fixing bacteria, which may be free-living or symbiotic.Please help me with question 7 ASAP
Answer:
B is the correct answer.
Explanation:
A is incorrect because diffusion does not depend on living system. It can occur in non-living systems as well. C is incorrect because when all transport proteins are used, the transported molecules are carried by the maximal number of transporters. Thus, the transport rate of substance is maximal.
D is false because translocation is primarily related to phloem.
Can bats eat butterflies?
9.5 What are the similarities and differences between reproduction in amoeba and reproduction in hydra?
Answer:
similarities: 1 they both reproduce asexually
Differences: 1 hydra reproduce through a process called budding whereas amoeba reproduce through a process called binary fission.
2 budding in hydra- results in symetric division.
binary fission in amoeba- results in unsymetrical division.
Explanation:
what are the steps of earthworm farming? Be concise in your points
Answer:
Explanation:
8 Easy Steps to Your Own Worm Farm
1. Find Containers. You need a container that can drain to keep your worm farm in.
2. Site Your Farm. Decide where you will put your worm farm on your plot.
3. Add Bedding. The worms in your farm need material in which to live.
4. Add Worms.
5. Add Food.
6. Cover.
7. Maintain.
8. Migrate Worms.
Which of the following is not a characteristic of pioneer species ?
They facilitate environmental change, making an environment more habitable for other species
They remain in an environment,even as more competitive species arrive
They tolerate a wide range of conditions
They are capable of colonizing a barren environment
Answer:
They remain in an environment,even as more competitive species arrive
Explanation:
Pioneer species, in ecological succession, are the first set of organisms to colonize a bare area of land or a disturbed area of land. Pioneer species include lichens, grasses, fungi etc.
Pioneer species have unique characteristics that distinguishes them from every other species of organism. These include:
- They facilitate environmental change, making an environment more habitable for other species.
- They tolerate a wide range of environmental conditions.
- They are capable of colonizing a barren environment, as in primary succession.
However, pioneer species do not remain in an environment, even as more competitive species arrive. They rather give way for new species to emerge and dominate.
Would a bacterial cell undergo mitosis in the same way as a eukaryotic cell? Why or why not?
Which would happen if more forests were cut down? A. The amount of CO2 in the atmosphere would in Ос B. Fossil fuels would build up in the soil. C. The nitrogen cycle would be stopped. O D. Nitrogen would be fixed by bacteria more quick
Answer:
A
Explanation:
A dihybrid cross is performed between a corn plant with the genotype YYSS and a corn plant with the genotype yyss. What percentage of offspring will be yyss
Answer:
0%
Explanation:
All corn plants will have the genotype YySs
The percentage of offspring that will be yyss is 0%.
In a dihybrid cross, the alleles for two different traits are considered. In this case, the traits are color (purple or yellow) and texture (smooth or wrinkled). The genotype of one parent is YYSS (homozygous dominant for both traits), and the genotype of the other parent is yyss (homozygous recessive for both traits).
According to the principles of Mendelian inheritance, when crossing two parents with different genotypes, the offspring will inherit one allele from each parent for each trait. In this case, the offspring will receive either a Y or y allele for color and an S or s allele for texture.
Since the parent with the genotype YYSS is homozygous dominant for both traits, all of its gametes will carry the Y and S alleles. On the other hand, the parent with the genotype yyss is homozygous recessive for both traits, so all of its gametes will carry the y and s alleles.
When these gametes combine during fertilization, all the resulting offspring will receive a Y allele for color and an S allele for texture, as there are no alternative alleles present in the parents. Therefore, none of the offspring will have the yyss genotype.
In summary, the dihybrid cross between the plants with genotypes YYSS and yyss will produce offspring with the genotype YySs, but none of the offspring will have the yyss genotype. Therefore, the percentage of offspring that will be yyss is 0%.
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The complete question is:
A type of corn has kernels that are either purple or yellow, and smooth or wrinkled. Yellow-Y- is dominant over purple-y- and smooth-S-is dominant over wrinkled --- A dihybrid cross is performed between a corn plant with the genotype YYSS and a corn plant with the genotype yyss. What percentage of offspring will be yyss? Select one or more:
a. 100% b. 80%c. 50% d. 25% e. 10%f. 0%walking, running and carrying a book involve using ________ type of muscles.
a) cardiac
b)voluntary
c)involuntary
d)Striated
Answer:
It is voluntary I believe.
Explanation:
Besides oxygen exchange, the respiratory system also functions to eliminate (Click to select) . Too much of this gas can cause a(n) (Click to select) in blood pH, compromising homeostasis.
Answer: Carbon dioxide, decrease
Explanation:
Cellular respiration is a set of reactions by which organic compounds (sugars) are degraded by oxidation to inorganic substances. This process provides energy in the form of ATP and to achieve this, many reactions occur in which electrons are passed from one molecule to another, called redox reactions. In the case of aerobic respiration, the final electron acceptor is molecular oxygen, which is reduced to water. Oxygen, like any gas, crosses the plasma membrane and then the mitochondrial membrane, and in the mitochondrial matrix it binds electrons and protons, forming water. It is in this final oxidation and in previous processes that energy is obtained. The reactions that extract energy from sugars such as glucose are catabolic reactions since a large molecule is broken into smaller molecules. For example, when glucose is broken down in the presence of oxygen, six molecules of carbon dioxide (CO2) and six molecules of water are obtained. Both CO2 and water are eliminated by lung exhalation.
In the event that this carbon dioxide is not completely eliminated, something called respiratory acidosis occurs, which is one of the disorders of the acid-base balance due to a decrease in the frequency of respirations or hypoventilation. The increase in the concentration of carbon dioxide in the blood causes the pH value to decrease. This scale is a measure of the degree of acidity or alkalinity of a substance or solution. A pH value of less than 7 means it is more acidic, and a pH value of more than 7 means it is more alkaline. Carbon dioxide is constantly produced as the body metabolizes energy, which will accumulate in the circulation rapidly if the lungs do not remove it properly. Alveolar hypoventilation thus leads to an increase in arterial CO2 partial pressure. The increase in pressure in turn decreases the ratio of bicarbonate (HCO3) to bicarbonate pressure with a consequent increase in acidity or decrease in blood pH. The body's metabolism rapidly generates a large amount of carbonic acid (H2CO3) and non-volatile acid. The lungs normally excrete the volatile fraction through ventilation without accumulation of acid in the blood but in this case this is not possible and this accumulation of carbonic acid causes the pH to rise. This disrupts homeostasis, a form of equilibrium that is achieved through a network of feedback control systems that constitute the self-regulatory mechanisms.
What is the role of an indicator? Predict how the glucose test strips and iodine would react with the following foods:
Grape
Tomato
Summer squash
Orange
Bell pepper
Answer:
Tomato
Explanation:
What process in biology requires energy from a cell?
Answer:
I would assume you are talking about just basic general biology, in which case it's probably just looking for cellular respiration.
Explanation:
what is the advantage of having a commercially available glucose gel or liquid available to treat a diabetic emergency?
Answer:
There are also a number of commercially available glucose tablets and gels. Benefits to using commercial products include the following: They aren't as tempting to snack on as candy is. They contain no fat, which can slow down digestion, or fructose, which has a smaller and slower effect on blood glucose.Explanation:
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The advantage of having a commercially available glucose gel or liquid
available to treat a diabetic emergency include the following:
No fat.No fructose.Glucose gels are used to treat individuals with diabetes in emergency
situations. They contain no amount of fats which could interfere in the
process of digestion and slow it down.
They also have no fructose present in the gel as its presence would prevents
which prevents the glucose effects in the body from functioning optimally.
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If two haploid sperm fertilize a single haploid ovum, the resulting zygote would be considered a ________.
Cuales son el grupo de briofitos más abundante
Answer:
Existe una clasificación para las plantas briofitas entre las que se cuentan: 1. Las Hepática, que se considera el mas diverso y como consecuencia hasta el mas abundante en el planeta ya que cuenta con al menos 8000 especies.
Explanation:
⁝⁞⁝⁞●∈ Jess bragoli ∋●⁝⁞⁝⁝#seguir aprendiendo!!Most carbohydrates manufactured in leaves and other photosynthetic parts are transported through the phloem to the rest of the plant by the process of translocation. osmosis. transpiration. receptor-mediated transport. turgor pressure.
Answer:
Translocation
Explanation:
Translocation is the movement of sugar that is produced by the source( i.e the part of plants where sugar is produced for other plant parts which could be leaves) to the sinks( i.e the active growing parts of plants where sugar is been deposited for use) where it is used up.
Translocation is done through the phloem tissue to sinks. Sinks could include leaves, fruits, shoots, young developing seeds, tubers and stems.
Translocation is done through the pressure flow model where concentration of sugar that is high at the source creates a low solute potential which helps water movement into the phloem from the adjacent xylem. This movement creates a high pressure potential in the phloem that produce the movement of phloem sap by bulk flow from source to sink.
Which is not true regarding the mammalian cardiac cycle
Group of answer choices
both atria contract at roughly the same time, and then the ventricles
relaxation, or filling, phase is called diastole
the semilunar valve is the usual pacemaker
contraction, or pumping, phase is called systole
Which of the following observations constituted the strongest evidence against the existence of blending inheritance?
a) Some characters are shaped by the environment (as well as heredity).
b) Sometimes two parents have the same appearance, but they have one or more offspring with a different appearance.
c) Characters acquired from the environment of the parents are often transmitted to the offspring.
d) Individuals never have characters intermediate to their parents-- there is always complete "dominance" of one parent's character.
Answer:
c) Characters acquired from the environment of the parents are often transmitted to the offspring.
When the belt is moving at a high speed, 350 pills can be coated per hour. How many minutes would it take to coat all the pills in this batch at a high speed?
Answer:
6 pills are coated in one minute time.
Explanation:
There are 350 pills can be coated in 60 minutes due to high speed of belt movement which means that 6 pills are coated in one minute time period so if there are 60 pills so the belt takes 10 minutes to complete the coating of the pills. If there are 200 pills to be coated then we used the equation i.e.
6 pills -------- 1 minute
200 -------- x
By cross multiplication we get,
6x = 200 x 1
x = 200 / 6
x = 33.3 minutes
This means that in 33 minutes the belt can coated 200 pills.
If segmentation has been done correctly, then the segments should reflect homogeneity within each segment and across/ between segments. This statement is ______________
Answer:
The correct answer is - true.
Explanation:
The given statement is true as common marketable traits are observed between the segments it would represent homogeneity. This same segment would be representing homogeneity within each segment and between segments that would be heterogeneity in order to propagate the market.
If segmentation has been done correctly, then the segments should reflect homogeneity within each segment and across/ between segments. This statement is TRUE.
In biology, segmentation refers to the embryonal process where different parts of the body are formed during development.Segmentation can be defined as the repetition of two or more body units along the anterior-posterior axis.Segmentation is a fundamental process in insect and mammal development.In conclusion, if segmentation has been done correctly, then the segments should reflect homogeneity within each segment and across/ between segments. This statement is TRUE.
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Dalits are followed enters in temples true or false
Answer:
False A notice by the priest told dalits they can’t enter the temple because they are “not pure”
