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NEETZoologyPrinciples of Inheritance and Variation

Why might one allele be different in a heterozygote?

Options

  1. ADue to blending of traits
  2. BDue to some changes it has undergone
  3. CDue to environmental factors
  4. DDue to random mutation

Correct answer

B. Due to some changes it has undergone

Step-by-step solution

Every gene, as you know by now, contains the information to express a particular trait. In a diploid organism, there are two copies of each gene, i.e., as a pair of alleles. Now, these two alleles need not always be identical, as in a heterozygote. One of them may be different due to some changes that it has undergone (about which you will read further on, and in the next chapter) which modifies the information that particular allele contains

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