Question

How do variations occur in clones?

Answer 1

Variations do appear even in the clones. They are of two types, acquired and mutations. The acquired variations are usually due to the effect of environment. They are not inherited. Differences appearing in monozygotic twins are also acquired variations. Mutations are sudden or discontinous inheritable variations which are produced due to changes in the genetic constitution. These are inherited by the progenies of the subsequent generation