| List-$I$ | List-$II$ |
| $(a)$ Oparin and Haldane | $(i)$ Analogy |
| $(b)$ Haeckel | $(ii)$ Simulation of primitive Earth conditions |
| $(c)$ Miller | $(iii)$ Chemical evolution |
| $(d)$ Wings of bird and butterfly | $(iv)$ Embryological support for evolution |
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| 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 $II$ |
| $1$. August Weismann | $a$. Theory of origin of species |
| $2$. Hugo de Vries | $b$. Theory of chemical evolution |
| $3$. Charles Darwin | $c$. Theory of continuity of germplasm |
| $4$. Oparin and Haldane | $d$. Mutation theory |
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