Fossils of Archaeopteryx were found from
Jurassic rocks
Triassic rocks
Cretaceous rocks
Cenozoic rocks
Stanley Miller had put the Oparin-Haldane theory to test in $1953$ by creating in the laboratory, the probable conditions on the primitive earth. In the experiment simple aminoacids were synthesized from which of the following mixtures, as observed after eighteen days?
Which one of the following aspect of evolution is shown by Darwin finches?
'Population tends to increase geometrically, while food supply increases arithmatically'. This concept was put forward by
Allopatric speciation is due to