Evolution | NTS Sindh Mdcat Past Paper MCQs

A When they can no longer produce viable, fertile offspring B When they look significantly different from each other C When they can interbreed successfully and produce offspring D When their habitats are separated by a significantly large distance E Both b & c

A Elongated fore-limbs and neck of giraffe B Custom of circumcision C Evolution of snake D Foot of modern horse E Webbed feet of duck

A Organisms produce more offspring than the environment can support B Variation between individuals arises by gene mutation C Only the best-adapted individuals survive and reproduce D Individuals compete for scarce resources E Adaptive variation is inherited

A De Vries B Darwin C Lamarck D Weismann

A Insect wing B Bat wing C Butterfly wing D Human arm

A Change in allele frequency over time B Stability of allele frequency in a population C Loss of genetic diversity D Rapid speciation

A No mutations B Random mating C Small population size D No natural selection