The frequency of a mutant gene in a population is expected to increase, if the gene is

The frequency of a character in a population is found to be increasing when:

Which of the following is essential for speciation?

The Darwinian variations are

When members of a population attain sexual maturity at different times preventing inter-breeding,it is termed as . . . . . . isolation.

In the experiment to isolate streptomycin-resistant mutants using the replica plating technique,which proves that such mutations do not arise as an adaptation,what is required to be used for the replica plating?