NEET BIOLOGY

GENETICS AND EVOLUTION

INHERITANCE AND VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
One form of a gene is called a(n)
A
gamete
B
phenotype
C
trait
D
allele
Explanation: 

Detailed explanation-1: -"Alleleā€ is the word that we use to describe the alternative form or versions of a gene. People inherit one allele for each autosomal gene from each parent, and we tend to lump the alleles into categories. Typically, we call them either normal or wild-type alleles, or abnormal, or mutant alleles.

Detailed explanation-2: -Every individual has two copies, or alleles, or a single gene. When the alleles are the same, they are known as homozygotes. When they are different, they are called heterozygotes.

Detailed explanation-3: -Well, alleles are matching genes; one from our biological mother, one from our biological father. We have two copies of every gene (strings of code that drive some biological function on our chromosomes). They can be identical, but they can often have slight differences.

Detailed explanation-4: -allele, also called allelomorph, any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression (phenotype) of a particular trait.

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