NEETZoologyMolecular Basis of Inheritance
What is polymorphism at the genetic level?
Options
- AAn abnormality in the DNA sequence
- BVariation in the DNA sequence due to mutations
- CA normal feature of the DNA sequence
- DA non-inheritable mutation
Correct answer
B. Variation in the DNA sequence due to mutations
Step-by-step solution
As polymorphism in DNA sequence is the basis of genetic mapping of human genome as well as of DNA fingerprinting, it is essential that we understand what DNA polymorphism means in simple terms. Polymorphism (variation at genetic level) arises due to mutations . New mutations may arise in an individual either in somatic cells or in the germ cells (cells that generate gametes in sexually reproducing organisms). If a germ cell mutation does not seriously impair an individual's ability to have offspring who can transmi