The chromosome number of a cell before and after the process of meiosis is conventionally represented as
2n → 2n
n → n
n → 2n
2n → n
If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is
3/4
1/2
1/4
1
At what stage in the life history of a mammal is the sex of an individual set?
at adolescence
at puberty
at birth
at conception
The main distinguishing features between the soldier termite and other members of the caste are the
presence of wings, possession of a small head and large thorax
presence of wings, possession of a large thorax and a small head
absence of wings, possession of strong mandibles and a large head
absence of wings, possession of big head and the absence of mandible
The flippers of a whale and the fins of a fish are examples of
divergent evolution
coevolution
continuous variation
convergent evolution
