Question

which one of the following trait is expressed only in the presence of identical allele?
1) inflated pod
2)yellow seed
3)green pod
4)green seed
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Answer 1

Explanation:

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Answer 2

4) Green seed is expressed only in the presence of identical alleles.

About Allele:

• The variant of a particular gene is referred to as an allele.
• Alleles collectively make up the set of genetic data that characterizes a gene, hence it is common in genetics for genes to exhibit variations or diversity.
• For instance, the ABO gene, which has six common variations, regulates the ABO blood grouping.
• An allele is a gene's variable form.
• Some genes exist in a number of forms, all of which share the same genetic locus on a chromosome.
• Because each genetic locus in humans contains two alleles—one acquired from each parent—they are known as diploid organisms.

Dominant allele:

• The relationship between two genetic variants is referred to as dominant.
• Each gene has two alleles that an individual inherits from each parent.
• One allele of a gene, known as the dominant gene, will be expressed if the alleles are different.
• The impact of the other allele, known as the recessive one, is concealed.

Recessive allele:

• A particular allele that, when present alone, has no effect on the person.
• The expression of the trait requires the presence of two copies of the allele.
• Only individuals who are homozygous (also known as having two copies of the gene) will experience the effects of recessive alleles.
• For instance, because the allele for blue eyes is recessive, you need two copies of the 'blue eye' allele to have blue eyes.

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