Why is it necessary to survey a large number of individuals

Why is it necessary to survey a large number of individuals to study multiple alleles?

Solution

ANS:

Correct Answer:

D) Any individual diploid organism can have, at most, two different alleles at a single locus.

The multiple allelism is associated with three or more alleles of the same gene, no single diploid organism can have all the alleles in a multiple allele system.

Wrong Answers:

A) A large number of crosses must be carried out to determine the mode of inheritance.

       This statement is partially true, but it is not the main reason to survey a large number of individuals to study multiple alleles.

B) Multiple allelism always involves at least two recessive alleles. A large number of individuals must be analyzed to determine the mode of inheritance.

     Multiple allelism does not need to have two recessive alleles.

         Ex: ABO blood group ( it had one recessive and two dominant alleles).

C) Families contain a limited number of alleles, but populations can contain all of the possibilities.

   A single family can contain all possible alleles, so this statement had no sense.