The least evidence in support of the theory of evolution is provided by the study of

Scales on reptiles are a feature for

The specific number of chromosomes in each somatic cell is represented by

The diagram represents

The colour of the ventral surface of a fish is lighter than that of the dorsal. This is mainly

The part labelled X is the

From which group of animals are the mammals generally believed to have most recently evolved?

The F1 of a cross between a tall and a dwarf plant was tall. The F1 was advanced to F2. How many of 120F2 plants will be dwarf?

A man with blood group a is married to a woman with blood group A. Which of the following group combinations is possible if the family has three children?