a.

20 chromosomes in gametes and 10 in the somatic cells

b.

40 chromosomes in the gametes and 20 in the somatic cells

c.

20 chromosomes in the gametes and 40 in the somatic cells

d.

40 chromosomes in the gametes and 40 in the somatic cells

a.

Adaptive radiation

b.

Differential reproduction

c.

Population variability

d.

Survival of the fittest

a.

Wilhem Johnson

b.

Thomas Morgan

c.

Gregor Mendel

d.

Felix Durjadin

a.

Marginal

b.

Axile

c.

Parietal

d.

Free central