NEET BIOLOGY

GENETICS AND EVOLUTION

GENETIC BASIS OF INHERITANCE

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which term describes an individual with two identical alleles for a particular trait?

A	homozygous
B	heterozygous
C	dominant
D	recessive

Explanation:

Detailed explanation-1: -Listen to pronunciation. (HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.

Detailed explanation-2: -An organism with two identical alleles is homozygous.

Detailed explanation-3: -Listen to pronunciation. (HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).

Detailed explanation-4: -The difference between homologous and homozygous is that homologous refers to a degree of correspondence or similarity, whereas homozygous refers to an organism in which both copies of a given gene have the same allele.

Detailed explanation-5: -Homozygous and heterozygous are terms that are used to describe allele pairs. Individuals carrying two identical alleles (RR or rr) are known as homozygous. While individual organisms bearing different alleles (Rr) are known as heterozygous.

There is 1 question to complete.