Two species of frogs belonging to the same genus occasionally mate, but the offspring fail to develop and hatch. what is the mechanism for keeping the two frog species separate?
a) the postzygotic barrier called hybrid inviability
b) the postzygotic barrier called hybrid breakdown
c) the prezygotic barrier called hybrid sterility
d) gametic isolation

D

Gametic isolation is a type of prezygotic barrier where the gametes (egg and sperm) come into contact, but no fertilization takes place. Gametes may be unable to recognize one another in different species.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

answer; a muscle cell, another neuron and a of the above