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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how is the expression of polygenic traits determined
The polygenic traits determined by the expression of its of both. Traits may be qualitative (which include eye color) or quantitative (which include peak or blood pressure).
Polygenic developments are decided through the interactions among numerous exclusive genes, which show incomplete dominance.
There are many exclusive allele combos can probable be constituted of mother and father which might be heterozygous for a polygenic trait managed through 3 exclusive genes with allele pairs Polygenic developments are expressed through the interplay of a couple of genes and the environment.
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Which plant is poisonous plant?
A poisonous plant is considered poisonous if it can injure or kill an organism when it is touched or consumed in sufficient amounts, or if it may cause a toxic and/or lethal response. When enough of a material is absorbed, breathed, or consumed by an organism, it becomes a poison and causes damage to the organism.
These poisonous plant include tulips, certain irises, agapanthus, autumn crocus, clivia, daffodil, hippeastrum, hyacinth, and lily of the valley. Bush tucker uses the vivid yellow and red seeds, but only organism after the poisonous plant have been leached away. If organism consume them straight from the branch, they are toxic.
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What heat source drives the Water Cycle? A Ocean B) Wind D Moon Sun
Answer:
D) Sun
Explanation:
The water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.
What is formed from glucose during anaerobic cell respiration?
Explanation:
Glycolysis breaks down glucose (6-C) into two molecules of pyruvate (3C), and also produces: Hydrogen carriers (NADH) from an oxidised precursor (NAD+) A small yield of ATP (net gain of 2 molecules)
Which of the following is NOT a basic need of plants in order to live?
A.Sunlight
B.Carbon Dioxide
C.Oxygen
D,Water
Answer: C
Explanation:
What is the fermentation product produced in an anaerobic muscle cell ?
Answer:
During a strenous activity,the supply of oxygen do not reach body requirement for aerobic respiration to occur ,therefore fermentation anaerobic respiration occurs and the end product is lactic acid which then accumulates in the muscles.Answer:
Lactic acid.
Explanation:
During anaerobic respiration,it results to the formation of lactic acid in the muscles cell as the end product of the process.
what type of mutation error has occurred to cause the disorder shown
Substitution mutation is a type of mutation that has occurred to cause the disorder of sickle cell anemia.
Sickle cell anemia is caused by a substitution in the beta-hemoglobin gene, which alters a single amino acid in the protein produced. It is a heredity disease inherited by only one parent or both. If the gene is inherited by only one parent the resulting offspring is known as carrier.
It is a type of mutation in which a nucleotide is replaced by another nucleotide and alters the whole structure of protein. Sickle cell anemia is a disease in which Substitution mutation occurs. It is an inherited blood disorder it interferes the deliverance of oxygen to tissues. Cells of sickle cell hemoglobin are stiff as compared to the normal hemoglobin cells. Their life is also very short as compared to the normal cells. They live up about 10 to 20 days only.
Your question is incomplete but most probably your full question was
what type of mutation error has occurred to cause the disorder shown
sickle cell anemia
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Which type of biomass energy can be produced from garbage heaps?
The following are types of biomass energy that are produced from garbage heaps; Ethanol, Biodiesel, Methane, Gasoline.
What is Biomass Energy?Biomass energy is energy generated or produced by living or once-living organisms. The most common biomass materials used for energy are plants, such as corn and soy, above. The energy from these organisms can be burned to create heat or converted into electricity.
Biomass is organic, meaning it is made of material that comes from living organisms, such as plants and animals. The most common biomass materials used for energy are plants, wood, and waste. These are called biomass feedstocks. Biomass energy can also be a non-renewable energy source.
Biomass contains energy first derived from the sun: Plants absorb the sun’s energy through photosynthesis, and convert carbon dioxide and water into nutrients (carbohydrates).
The energy from these organisms can be transformed into usable energy through direct and indirect means. Biomass can be burned to create heat (direct), converted into electricity (direct), or processed into biofuel (indirect).
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When developing his ideas about natural selection, Darwin focused most on
A. group behavior.
B. DNA
C. kin selection.
D. adaptations.
Darwin focused most on adaptations when developing his ideas about natural selection (Option D).
What are evolutionary adaptive features?Evolutionary adaptive features are different phenotypic traits in organisms that confer an advantage in reproduction and or survival for a particular environment in which these organisms live. Thus the process of natural selection selects them to form the next generation.
Therefore, with this data, we can see that evolutionary adaptive features are separated by natural selection in order to produce a new generation of individuals associated with these phenotypic traits.
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What happens to chromosomes during reproduction?
Meiosis, the second sort of cell division, makes sure that each generation of people has the same number of chromosomes. To create sperm and egg cells, a two-step process that cuts the number of chromosomes in half (from 46 to 23) is used.
Mitosis and meiosis are the two distinct processes of cell division. When people talk about "cell division," they typically mean mitosis, which is the process of creating new cells for the body. The cell division process known as meiosis is what produces egg and sperm cells.
A vital process for life is mitosis. A cell divides into two identical daughter cells after duplicating all of its components, including its chromosomes. Due to the importance of this procedure, specific genes carefully regulate each step of mitosis. Health issues like cancer may develop when mitosis is improperly controlled.
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which element has the greatest tendency to undergo oxidation
Francium has the greatest tendency to undergo oxidation
Francium is a member of the group of elements known as alkaline earth metals. It has the highest propensity to lose one electron because, after doing so, it will assume the noble gas structure.
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What is meant by autosomal recessive inheritance?
Autosomal recessive inheritance refers to the way in which some genetic changes, or rare diseases, are passed down from parents to their offspring.
The specific chromosomes impacted by autosomal recessive inheritance are autosomal. This indicates that one of the first 22 non-sex chromosomes contains the gene mutation that results in an autosomal recessive uncommon disease or ailment. The 46 chromosomes found in 23 pairs make up the body's cells. One from the mother and one from the father make up each pair of genes.
When a person receives two mutated genes from each of their parents, this is known as autosomal recessive inheritance. The same gene has mutations in both copies. Both parents must have the gene mutation for this to occur. They are unlikely to have any disorder symptoms because they are carriers.
There is no guarantee that the offspring of parents who carry an autosomal recessive gene mutation will suffer from a rare disease.
Their offspring will have a 25% chance of being born with two normal genes (i.e., without any mutations), a 25% chance of inheriting both recessive gene mutations (i.e., the child will be affected by an autosomal recessive disorder), and a 50% chance of having a child who is a carrier of the same genetic mutation as their parents but does not exhibit any symptoms of a rare disorder.
A disease that is autosomal recessive
Tay-Sachs is one of the most well-known autosomal recessive diseases. The majority of sufferers of this rare neurological system disease pass away in their early childhood, and life expectancy is short.
It is a progressive syndrome that causes the central nervous system of the body to deteriorate. The group with the highest prevalence of this rare illness is European Ashkenazi Jews.
An additional autosomal recessive ailment is sickle cell disease. African Americans make up to 2 in 12 bearers of this autosomal recessive gene variant. Red blood cells with this autosomal recessive condition are more likely to be sticky and stiff, which makes it harder for them to transport oxygen throughout the body. Further medical and health issues may result from this.
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What is a gene be specific the instructions in a gene codes for what kind of molecule?
Answer:
Protein
Explanation:
A gene is a small section of DNA? that contains the instructions for a specific molecule, usually a protein?. The purpose of genes? is to store information. Each gene contains the information required to build specific proteins needed in an organism. The human genome? contains 20,687 protein-coding genes.
abnormal proliferation of cells is called
Whether benign or malignant, a tumour is any aberrant cell proliferation.
A benign tumour, like a typical skin wart, stays in the same place, without infecting nearby healthy tissue or disseminating to other parts of the body. However, a malignant tumour has the capacity to both invade nearby normal tissue and spread throughout the body through the circulatory or lymphatic systems (metastasis). Only malignant tumours are legitimately referred to as cancers, and cancer is particularly deadly due to its propensity to penetrate and metastasis. The spread of malignant tumours to distant body regions frequently renders them resistant to such localised treatment, whereas benign tumours can typically be surgically removed.
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when do you use cpctc in a proof
The two triangles must first be shown to be congruent using one of the triangle congruence criteria before CPCTC may be established. Consider the triangles ABC and CDE, for instance, where BC = CD and AC = CD are specified.
Corresponding Parts of Congruent Triangles are Congruent abbreviated as CPCTC. According to the CPCTC theorem, every corresponding component of one triangle is congruent to the other when two triangles are congruent. This indicates that when two or more triangles are congruent, the accompanying sides and angles are likewise congruent or equivalent in size. If two triangles are precisely the same size and shape, they are said to be congruent. Three of the sides and the angles of two congruent triangles are equal to one another. When a triangle's three sides correspond to those of another triangle, they are at the same location. According to corresponding angles, the three angles of one triangle are located in the same area as those of the other triangle.
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Decades ago farming was not a controversial subject. Today, people have very definite opinions as to how their food should be produced. The three methods of farming are conventional, organic, and GMO farming. You have been assigned the task of creating a table to compare and contrast the three methods. Choose ALL of the descriptors that could be placed in the Organic column.
A) produce is of higher nutritional quality than with a similar crop grown using conventional methods
B) reduced expenses in organic production that comes with hand labor and simpler farming techniques
C) use of biological control, crop rotations and other techniques to manage weeds, insects and diseases
D) yield is typically lower in an organic field than for a similar crop grown in a conventional or GM cropping system
E) elimination of synthetic pesticides and fertilizers and other materials, such as hormones and antibiotics
The descriptors that could be placed in the organic column for food production include production is of higher nutritional quality than with a similar crop is grown using conventional methods; use of biological control, crop rotations and other techniques to manage weeds, insects and disease; and elimination of synthetic pesticides and fertilizers and other materials, such as hormones and antibiotics (Option A, C and E).
What does organic food production mean?Organic food production refers to all methods used in agriculture to produce foods in a scalable quantity and simultaneously avoid contaminant sources such as herbicides and pesticides that may suffer from bioaccumulation.
Conversely, genetically modified organisms such as bt crops involve the use of genetic engineering techniques in the laboratory to produce foods in a scalable quantity.
Therefore, with this data, we can see that organic food production is the choice method to be free of any contaminant substances but it may raise concerns regarding the volume of production when compared to other methods.
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Describe ways to maintain fish as renewable resources and explain how scientific data are used to manage fish stocks?
Answer:
Electronic sonar and Global Positioning Systems are used to locate the fish. Ships cross the area, dragging huge nets at the right depth to catch them. The usable catch is often cut, packaged, and frozen right on board. Ships can remain on the ocean for several weeks before returning to home port.
Stock assessments are scientific processes that analyze available data using statistical models to produce management advice. That management advice estimates sustainable harvest levels maximizing fishery removals while protecting stocks’ long-term health.
What is the correct order of steps in the cell cycle ?
The cell cycle is a four stage procedure
Gap 1, or G1 phase Synthesis, or S phase Gap 2, or G2 phase Mitosis, or M phaseThe period between cell divisions is represented by the stages G1, S, and G2, which together make up interphase. An individual cell "decides" whether or not to join the cell cycle and divide based on the stimulatory and inhibitory signals it receives.
Checkpoint signalling systems and specialised proteins are used by cells to guarantee correct cell cycle progression. DNA damage is checked for before and after S phase at checkpoints at the end of G1 and the start of G2. Similar to this, a checkpoint in mitosis makes sure that the chromosomes are properly separated in anaphase before the cell's spindle fibers are properly aligned in metaphase.
Hence, cell cycle is sequence of event in organized manner.
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What are the 3 main checkpoints?
Cell-cycle checkpoints prevent the transmission of genetic errors to daughter cells. There exist three major cell-cycle checkpoints; the G1/S checkpoint, the G2/M checkpoint, and the spindle assembly checkpoint (SAC).
The vast amount of DNA contained within the chromosomes must be precisely duplicated before being precisely separated into two daughter cells that are genetically identical. This is the most fundamental task of the cell cycle.
Walther Flemming was the first to depict the various steps in the cell cycle that lead to cell division in 1882 after creating techniques to stain cells that revealed subcellular structures. To divide the genetic material in a cell, spindle fibers create a protein structure. When a parental cell undergoes mitosis or meiosis, the spindle is required to divide the chromosomes into two daughter cells in an equal number. The spindle fibers that form the mitotic spindle are known as such during mitosis.
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What are the 2 steps of protein synthesis in order?
Answer:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation.
Why is mitosis important 3 reasons?
Expansion and development. Mitosis is the process by which an embryo develops after a gamete from meiosis has united with another gamete to form an embryo. Cell division is essential for organism development, tissue repair, healing and regeneration, and reproduction. Asexual reproduction is a form of reproduction in which the number of chromosomes or the fusion of gametes are not altered.
Multicellular creatures depend on mitosis to reproduction of new cells for growth and to replace damaged or worn-out cells, such as skin cells. Mitosis serves as Mitosis the main asexual reproductive mechanism for a large number of single-celled organisms.
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Which parts of this organism are haploid? (select all that apply)
C
D
A
B
The parts of the organism that are haploid would be A and D. The second and third options.
What are haploids?Haploids refer to living organisms or parts of living organisms that contain a single chromosome set (n) instead of double chromosome sets (2n). Living organisms or parts of living organisms with double chromosome sets are said to be diploid (2n).
Organisms whose life cycles alternate between haploid and diploid generation can exist either as haploids or as diploids or even as both.
The picture shown in the image is that of a bryophyte, mosses to be precise. The dominant generation is the haploid generation. Thus, D represents the haploid or gametophyte generation.
The gametophyte carries the sporophyte (C) which divides by meiosis to produce haploid spores (A).
Thus, the parts of the picture that are haploid are A (spores) and D (gametophyte) respectively.
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how to know if you carry the red hair gene
The test will examine each parent's DNA for evidence of the MC1R gene, which causes redheadedness. "We can... detect if an individual is a carrier of any of the three prevalent redhead variations in the gene MC1R using a simple saliva test to determine deep ancestry," stated Dr.
What causes red hair?
Red hair is a recessive hereditary feature induced by a sequence of mutations in the MC1R gene on chromosome 16. Because red hair is a recessive feature, it must be inherited from both parents.
As a result, there are significantly more persons harboring the red hair mutation than have red hair. Redheads account for around 13% of the Scottish population, with 40% carrying at least one mutation.
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How are differentiated cells different?
It is the procedure by which one type of cell transforms into another.Cell differentiation can result in changes to a cell's size, shape, membrane potential, metabolic processes, and responsiveness.
What distinguishes differentiated cells from one another?Gene expression alterations lead to cell differentiation.
This happens when various environmental signaling molecules activate or repress certain transcriptional factors that are required to express particular genes in the DNA.
What does the differentiation of cells mean?Pay attention to how it sounds.the process through which newly formed, immature (unspecialized) cells develop their own unique properties and mature into their specialized form and function.
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Do we have 30000 genes?
The human genome is actually not that much more complex than a modern jet aeroplane, which has more than 200,000 unique pieces, each of which interacts with three or four others on average. This is despite the fact that the human genome only has 30,000 genes in human DNA.
With the intention of understanding the bulk of the human genome, the Human Genome Project (HGP) was started. This involved identifying every human gene and mapping it out along the genome, as well as learning how much coding DNA we had and learning about human physiology, evolution, and development. The ultimate goal was to boost biomedical research by decoding crucial knowledge about how the entire genetic material functions.
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Differences in the physical traits of organisms is a(n) __________________.
Differences in the physical traits of organisms is a(n) Variation.
What is variation?In biology, variation is the difference in cells, individual organisms or characters or physical traits among individuals of any species caused by either genetic makeup or an effect of environmental factors. Physical traits are those distinguishable characteristics found in organisms.
Genetic variations can emerge from variant genes known as mutations or processes where genes are rearranged as cells are getting ready to divide which is called genetic recombination. When gene activities are altered by variation, they can introduce different physical traits in organisms.
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I need help with this assignment bio question
(a) The rate of photosynthesis will decrease because even though Hydrilla plants require less sunlight but the requirement is necessary.
(b) Three limiting factors are- Light intensity, Temperature and [tex]CO_{2}[/tex].
(c) The bubbles represent the evolution of oxygen.
What is Photosynthesis?
Plants and other living things employ a process called photosynthesis to transform light energy into chemical energy that can subsequently be released through cellular respiration to power the organism's activities.
What is the Hydrilla plant?
The hardy, quickly-growing perennial herb Hydrilla has long, slender stems that can reach lengths of up to 7 meters (23 ft). The tiny, lance-shaped or oblong leaves are clearly toothed and grow in pairs or whorls of three to eight. Also, they are aquatic and always remain submerged in water, they lack stomata and use their body for photosynthesis.
The rate of photosynthesis will decrease because even though Hydrilla plants require less sunlight but the requirement is necessary. Three limiting factors are- Light intensity, Temperature and [tex]CO_{2}[/tex]. The bubbles represent the evolution of oxygen.
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What is distribution of traits?
The alleles of the various genes that each individual chromosome carries are mixed and matched traits with regard to one another, resulting in a distribution of traits.
When comparing populations, differences are typically seen as variations in the frequency distributions of the states (or kinds) of a certain feature (or set of traits). As a result, if two or more populations exhibit the same trait states at the same rates, they are said to be identical. A population's variance and pattern of attributes are influenced by both genetic and environmental variables. During meiosis, chromosomes can switch sections, causing mutations brought on by environmental factors, mistakes in DNA replication, or both.
As a result, we can infer that the alleles of the numerous genes that each chromosome carries are mixed and matched traits in relation to one another, producing a distribution of traits.
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a disease in which the causative agent remains inactive for a time before producing symptoms is referred to as?
Answer:
Latent Disease
Explanation:
Causative agent remains inactive for a. time, but then becomes active and produces disease symptoms.
please help Think about the effect that NASA technologies have on your everyday life. What’s your opinion of the reciprocal relationship that NASA has with the public? Do you think this relationship is harmful or helpful? How might reduced government funding of NASA affect you as a consumer? Give evidence and reasoning for each of your claims.
earth and space science
Our reciprocal relationship with NASA and its technologies are more helpful than harmful to our life. The work of NASA makes us understand the earth we live and even their technologies allow us to see how the world and space look even if we just see from the screen.
But, not many people knew that some innovation that become common things in our daily life was affected by space technology. One of them is the baby formula; when NASA was researching the algae potential as the agent of recycling for long-duration space travel, they found out that nutrient-rich algae contained Docosahexaenoic Acid (DHA) and Arachidonic Acid (ARA) which is an excellent dietary supplement for the development of mental and visual of an infant. Imagine how much people were helped by these discoveries because a lot of mothers couldn't breastfeed their babies and needed baby formula. Moreover, don’t forget the internet we use today also came from the space technology of NASA.
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