Question

The ultimate source of variation is :-

Answer 1

Answer:

Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection. Polyploidy is an example of chromosomal mutation.

Answer 2

Answer:

answer

Explanation:

1. The ultimate source of genetic variation is random mutation i.e. changes in nucleotide sequences of DNA. They may involve only a single base pair or many as in chromosomal mutations. Mutation can change allele frequencies as well as introduce new alleles.