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3 years ago

How do mutations lead to variation?

Biology

1 answer:

iVinArrow [24]3 years ago

3 0

Answer:

A.producing changes in the genetic code

Explanation:

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

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Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive allele in humans. A woman whose father

prohojiy [21]

Answer:

(a) 1/2; (b) no

Explanation:

Glucose-6-phosphate dehydrogenase deficiency (G6PD) is an X-linked recessive disorder and the woman's father was diseased so it means that woman is a carrier of the allele but has normal phenotype. It means that she will have XXᵇ genotype.

In contrast to this, her husband is diseased so his genotype will be XᵇY.

The Punnett square diagram related to the cross is attached.

(a) Proportion of their sons expected to be G6PD is 1/2:

They both may give birth to 4 progeny with genotypes XXᵇ, XᵇXᵇ, XY and XᵇY. It means they both may have 2 sons out of which one with genotype XᵇY will be diseased while the one with genotype XY will be healthy. So the proportion of their sons having G6PD is 1/2 or 50%.

(b) If the husband were G6PD deficient, the answer will not change.

The reason behind this is that this disease is caused by an allele located in X chromosome. But father contributes only Y chromosome to his son not X chromosome. The X chromosome will affect the genotype of his daughter not son that is why answer will not change. It means they will still have 1/2 of their sons diseased.

7 0

3 years ago

Plants provide energy to animals for their life processes by D)

Shalnov [3]

Answer:

Nutrition

Explanation:

Nutrition by a process called photosynthesis. Plants use sunlight carbon dioxide and water to produce glucose which is sugar for food that fits for a plants nutrition.

5 0

3 years ago

What are the monomers of DNA? A. Nucleotides B. Polypeptides C. Amino Acids

amm1812

<h2>Answer:</h2>

Nucleotides is the answer

<h2>Explanation :</h2>

=>Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as monomeric units of the nucleic acid polymers deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth.

=> Or maybe In the Universe [UFT]

6 0

3 years ago

Help please!!!!!!!!!!!

Novay_Z [31]

i am pretty sure it is b

4 0

3 years ago

Approximately percent of state trail court decision are affirmed on appeal

blsea [12.9K]

The percentage of state trial court decisions that are appealed and affirmed is 80%. State trial court decisions are subject to the review of the appeals court. Civil cases can be appealed which extends to the decision of the jury and the judge.

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3 years ago