Question

Decide whether each of the following scenarios represent a prezygotic or postzygotic isolating mechanism: a) Two bird populations have such different mating calls that they never mate with each other b) One population of frogs mates in March, and the other population mates in August c) Sheep and goats can mate, but their chromosomes are misaligned, so a zygote never forms d) Mating a horse and a donkey produces a mule, which is sterile e) Two populations of snakes never meet because they are separated by a mountain range

          Decide whether each of the following scenarios represent a prezygotic or postzygotic isolating mechanism:
a) Two bird populations have such different mating calls that they never mate with each other
b) One population of frogs mates in March, and the other population mates in August
c) Sheep and goats can mate, but their chromosomes are misaligned, so a zygote never forms
d) Mating a horse and a donkey produces a mule, which is sterile
e) Two populations of snakes never meet because they are separated by a mountain range

Decide whether each of the following scenarios represent a prezygotic or postzygotic isolating mechanism:
a) Two bird populations have such different mating calls that they never mate with each other
b) One population of frogs mates in March, and the other population mates in August
c) Sheep and goats can mate, but their chromosomes are misaligned, so a zygote never forms
d) Mating a horse and a donkey produces a mule, which is sterile
e) Two populations of snakes never meet because they are separated by a mountain range

Added by Natalia W.

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