Two populations of annelids (worms) live in distinct areas and on different soil types.Researchers are interested as to whether the populations have acquired different types of reproductive isolation.Which method would be best to determine whether two populations exhibited temporal isolation?
A) Move them into a common experimental setting to see whether they will produce offspring. If they produce few offspring, they exhibit gametic isolation.
B) Move them into a common experimental setting to see whether they will produce offspring. If they produce many offspring, they exhibit gametic isolation.
C) Bring them into the lab. Observe single pairs of a male from one population and a female from the other. See whether the sperm from the males of one population will fertilize eggs of the females of the other. If they do, then they exhibit gametic isolation.
D) Bring them into the lab. Observe single pairs of a male from one population and a female from the other. See whether the sperm from the males of one population will fertilize eggs of the females of the other. If they do not, then they exhibit gametic isolation..
E) Observe when each population is active. If they are active at different times, then they exhibit temporal isolation.

Question

Quizplus · Accepted Answer

Temporal isolation refers to populations being reproductively isolated due to differences in the timing of their reproductive activity. Therefore, observing when each population is active is the best method for determining whether the populations exhibit temporal isolation. The other methods listed are used to determine gametic isolation, which is a different form of reproductive isolation.

Two Populations of Annelids (Worms) Live in Distinct Areas and on Different