Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different populations of the world,can we not predict human migratory patterns in pre-history and history? Do you agree or disagree? Provide an explanation for your answer.

Match the name of the scientist in Column $I$ with the name of the theory in Column $II$.

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

Choose the correct option.

During evolution,which of the following plants lost its chlorophyll?

Charles Darwin was influenced by the writings of which of the following?

Define and explain divergent evolution,convergent evolution,and mutation.

Given below are four statements $(A-D)$ each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
Statements:
$(A)$ Wings of butterfly and birds look alike and are the results of $ . . . . . . (i) . . . . . . $ evolution.
$(B)$ Miller showed that $CH_4, H_2, NH_3$ and $ . . . . . . (i) . . . . . . $ when exposed to electric discharge in a flask resulted in formation of $ . . . . . . (ii) . . . . . . $.
$(C)$ Vermiform appendix is a $ . . . . . . (i) . . . . . . $ organ and an $ . . . . . . (ii) . . . . . . $ evidence of evolution.
$(D)$ According to Darwin,evolution took place due to $ . . . . . . (i) . . . . . . $ and $ . . . . . . (ii) . . . . . . $ of the fittest.