Write a note on types of Germinal Variation.

Explanation

Germil variation are classified into two types:
(i) Continuous variation, (ii) Discontinuous variation
Continuous variation: These are small variations which occur among individuals of a population. They are also called as fluctuating variations. They occur by gradual accumulation in a population. e.g. skin colour, height and weight of an individual, colour of eye, etc.
Discontinuous variation: These are sudden changes which occur in an organism due to mutations. They do not have any intermediate forms. These large variations are not useful for evolution. e.g. short legged Ancon sheep, six or more digits (fingers) in human, etc.