Reproductive isolation between segments of a single population is termed as

Who wrote the book "Genetics and the Origin of Species"?

What is the cause of the diversity observed in living organisms?

Which of the following is responsible for the transformation of plants from simple and lower forms to complex and higher forms?

$A$: During industrialization,dark-winged or melanised moths were more abundant.
$R$: They were able to camouflage themselves,hide in the background,and survived.

The theory that evolutionary change is slow and continuous is known as: