$A$ : $A$ single large mutation called saltation can produce new species.
$R$ : Mutations are directional
Assertion : Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits.
Reason : Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.
Match List $- I$ with List $- II.$
List $- I$ | List $- II$ |
$(a)$ Adaptive radiation | $(i)$ Selection of resistant varieties due to excessive use of herbicides and pesticides |
$(b)$ Convergent evolution | $(ii)$ Bones of forelimbs in Man and Whale |
$(c)$ Divergent evolution | $(iii)$ Wings of Butterfly and Bird |
$(d)$ Evolution by anthropogenic action | $(iv)$ Darwin Finches |
Choose the correct answer from the options given below.
$(a)- (b)- (c)- (d)$
Evolution is
The three natural processes that form the basis for evolution are