Match the columns:
Column-$I$ Column-$II$ $(1)$ Mutation $(a)$ Change in population allele frequencies due to chance alone. $(2)$ Gene flow $(b)$ Difference in survival and reproduction. $(3)$ Natural selection $(c)$ Immigration,emigration change allele frequencies. $(4)$ Genetic drift $(d)$ Source of new alleles.
| Column-$I$ | Column-$II$ |
|---|---|
| $(1)$ Mutation | $(a)$ Change in population allele frequencies due to chance alone. |
| $(2)$ Gene flow | $(b)$ Difference in survival and reproduction. |
| $(3)$ Natural selection | $(c)$ Immigration,emigration change allele frequencies. |
| $(4)$ Genetic drift | $(d)$ Source of new alleles. |
(D) $(1) - (d)$: Mutation is the process that introduces new genetic variations or alleles into a population.
$(2) - (c)$: Gene flow refers to the movement of alleles into or out of a population due to the migration (immigration or emigration) of individuals.
$(3) - (b)$: Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring,leading to differences in survival and reproduction.
$(4) - (a)$: Genetic drift is the change in the frequency of an existing gene variant (allele) in a population due to random chance events.
$(2) - (c)$: Gene flow refers to the movement of alleles into or out of a population due to the migration (immigration or emigration) of individuals.
$(3) - (b)$: Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring,leading to differences in survival and reproduction.
$(4) - (a)$: Genetic drift is the change in the frequency of an existing gene variant (allele) in a population due to random chance events.
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