Match the columns :
Column - $I$
Column - $II$
$(1)$ Mutation
$(a)$ Change in population allele frequencies due to chance alone.
$(2)$ Gene flow
$(b)$ Difference insurvival and reproduction
$(3)$ Natural selection
$(c)$ Immigration, emigration change allele frequencies.
$(4)$ Genetic drift
$(d)$ Source of new alleles.
Match the columns :
| Column - $I$ | Column - $II$ |
| $(1)$ Mutation | $(a)$ Change in population allele frequencies due to chance alone. |
| $(2)$ Gene flow | $(b)$ Difference insurvival and reproduction |
| $(3)$ Natural selection | $(c)$ Immigration, emigration change allele frequencies. |
| $(4)$ Genetic drift | $(d)$ Source of new alleles. |
$(1 - d), (2 - c), (3 - b), (4-a)$
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$II.$ Natural selection do not include variations
$III.$ Concept of natural selection was given by Hugo de Vries
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$R$ : Due to lack of competition from any other mammal due to continental drift
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