Rh factor is the formation of……………..
a) antigen A
b) antigen B
c) antigen D
d) antigen O
Variation And Evolution:
Individuals show great difference due to……..
a) evolution
b) variation
c) mutation
d) none of these
Variation is the difference in………….between individuals.
a) chromosomes
b) alleles
c) trait
d) all of these
Variation is the difference in trait between individuals of the…………..species.
a) different species
b) same
c) un equal
d) none of these
Variation is necessary for………………………
a) artificial selection
b) natural selection
c) mutation
d) none of these
