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4 years ago

Most mutations do not become widespread in a population because they lower an individual’s fitness. True or False?

Biology

1 answer:

Elodia [21]4 years ago

4 0

Answer: True

Explanation:

Most of the mutation is not widespread because they cannot be transferred from one generation to another and moreover due to this reason they are not naturally selected.

These mutations makes the body of individual weaker and leads to the death of the organism.

If the organism dies how will it transfer the traits so is not favored by nature. This is against the fitness of the individual and the organism becomes weak.

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New genes created by genetic engineering produce brand new proteins called "novel" proteins. All proteins have the potential to

ira [324]

Answer:

Novel proteins may cause allergic reactions. Moreover, protein may also suffer folding when they are introduced into the plant, thereby converting them in potential allergens.

Explanation:

Genome engineering techniques are those procedures used in molecular biology to design genetically modified organisms by altering their genomes.

All proteins have the potential to cause allergic reactions. For example, celiac disease is an autoimmune disorder caused by an allergic reaction to the proteins of cereals; however, only a small fraction of proteins is associated with autoimmune diseases. There are many methods to study the potential of protein allergens, the enzyme-linked immunosorbent assay (ELISA) is currently the technique most widely used for this purpose by detecting antibody-antigen interactions (i.e., interactions between molecules of the immune system and antigen allergens).

3 0

4 years ago

Read 2 more answers

16. What are the substances that constitute the chromatin? What is the difference between chromatin and chromosome?

Keith_Richards [23]

Tchromatins make up chromosomes. Chromatins are just a combination of DNA, histones(a type of proteins) and RNA. Strands of DNA are considered as chromatins and when these strands combine, this forms the chromosome. Chromatin is untangled and unfolded DNA, while chromosome is condensed DNA. The chromatin, dispersed in the nucleus, is a set of filamentous DNA molecules associated to nuclear proteins called histones. Each DNA filament is a double helix of DNA and thus a chromosome.

7 0

3 years ago

Under aerobic conditions, when is pyruvate produced and consumed? It is produced in glycolysis and consumed in fermentation.It i

Nastasia [14]

1. The correct answer is: It is produced in glycolysis and consumed in the citric acid cycle

Pyruvate is a molecule that connects metabolic processes of cellular respiration: glycolysis and Krebs (citric acid) cycle. Glycolysis is a process that occurs in the cytosol of the cell and in which several of enzymes catalyze the breakdown of glucose molecules. At the end of glycolysis, products are two pyruvate molecules and released energy (ATP).

After this step, in the matrix of mitochondria oxidation of pyruvate occurs. During this reaction, pyruvate is converted into a three-carbon molecule—acetyl CoA. Acetyl then acts as fuel for the citric acid cycle.

2. The correct answer is: electron transport chain

The amount of ATP produced per glucose is:

Glycolysis: 2 ATP

A process in which glucose is converted into two molecules of pyruvate, ATP is made, NAD+ is converted into NADH.

Krebs Cycle (citric acid cycle): 2 ATP

The acetyl CoA (made from pyruvate) goes through a cycle of reactions. ATP, NADH, FADH2 and CO2 is released.

Electron Transport Chain (oxidative phosphorylation): 28 ATP

Electrons from NADH and FADH2 move down the electron transport chain, protons are pumped out of the matrix, forming a gradient. Gradient of proton is used for the ATP synthesis.

Fermentation: 2 ATP

Breaking down carbohydrates (usually glucose) in the absence of oxygen.

5 0

3 years ago

The molten layers of Earth were created when Earth heated up because of

anyanavicka [17]

Answer:

Explanation:

There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements.

5 0

3 years ago

Plants with a primary root and little lateral roots that extend out from it have a ____ system.

lisov135 [29]

Plants with a primary root and little lateral roots that extend out from it have a tap root system.

A taproot system, generally found in dicotyledons, is made up a central, large pointed root and this is what is called the taproot.

Smaller roots branch off from the taproot and are known as lateral roots. The tap root is larger in diameter than the lateral roots. Tap roots generally grow much more deeply into the soil compared to fibrous roots.

7 0

3 years ago