The allele which is unable to express its effect in the presence of another is called recessive.

•A member of a pair of alleles that does not show its effect in the phenotype in the presence of any other allele. It is denoted by small letter.

Question

Answer

The allele which is unable to express its effect in the presence of another is called recessive.

•A member of a pair of alleles that does not show its effect in the phenotype in the presence of any other allele. It is denoted by small letter.

Answer

The allele which is unable to Express its effect in the presence of another called recessive allele ...n the allele which suppress its effect is called dominant allele.. .

dominant allele denoted in capital letters n recessive allele denoted by small letters

Answer

A

Answer

The correct answer is option 'D': recessive.

Explanation:
Genes are segments of DNA that determine specific traits in an organism. Each gene can have different forms, which are known as alleles. Alleles can be dominant or recessive, depending on their ability to express their effect in the presence of another allele.

In the given question, the allele that is unable to express its effect in the presence of another allele is referred to as recessive.

To understand this concept further, let's consider an example of Mendelian genetics. Mendel's laws of inheritance explain how traits are passed from parents to offspring.

- Dominant Allele:
A dominant allele is capable of expressing its effect even in the presence of another allele. In a heterozygous individual (having two different alleles for a particular gene), the dominant allele will determine the phenotype or observable trait. It is represented by an uppercase letter.

- Recessive Allele:
A recessive allele is unable to express its effect in the presence of a dominant allele. It only manifests its effect when present in a homozygous state (having two identical recessive alleles). In a heterozygous individual, the dominant allele will mask the expression of the recessive allele. The recessive allele will only be expressed when an individual is homozygous recessive. It is represented by a lowercase letter.

For example, consider a gene that determines eye color. Let's say the dominant allele (B) codes for brown eye color, and the recessive allele (b) codes for blue eye color. If an individual has the genotype BB or Bb, they will have brown eyes because the dominant allele (B) expresses its effect. However, if an individual has the genotype bb, they will have blue eyes because the recessive allele (b) is not masked by a dominant allele.

In conclusion, the allele that is unable to express its effect in the presence of another allele is called a recessive allele.

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