Two species of frogs belonging to the same genus occasionally mate, but the embryos stop developing after a day and then die. Which of the following mechanisms keep the species separate?
1) Geographical isolation
2) Temporal isolation
3) Behavioral isolation
4) Mechanical isolation

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Answer:

Two species of frogs belonging to the same genus occasionally mate, but the embryos stop developing after a day and then die. Which of the following mechanisms keep the species separate?

1) Geographical isolation

2) Temporal isolation

3) Behavioral isolation

4) Mechanical isolation