The sequence of events in geographic speciation is most likely to be
Genetic divergence $\rightarrow$ geographic barrier $\rightarrow$ reproductive isolation
Geographic barrier $\rightarrow$ genetic divergence $\rightarrow$ reproductive isolation
Reproductive isolation $\rightarrow$ genetic divergence $\rightarrow$ geographic barrier
geographic barrier $\rightarrow$ reproductive isolation $\rightarrow$ Genetic divergence
Adaptation of a species is its
Most primitive living mammals which provide an evidence of organic evolution from geographical distribution are found in
Thick skull, cranial capacity about $1075$ c.c., low fore head, absence of chin and large canine were present in
Neanderthal man differs from modern man in