Hardy-Weinberg Equilibrium

[StarryNights]

---

Members do not see this ad.

One of the conditions of H-W Equilibrium is that there is no net migration in or out of the population. On one of Kaplan's section test, a population of 500 guppies were moved from one river to another tributary. I assumed that since the entire population was moved over that there still is no net migration in or out to affect the gene pool. But Kaplan's answer says that the move counts as a migration. I think physically it was a migration but there were no new incoming members or old members leaving? So wouldn't the condition still be upheld? I'm confused. Help much appreciated!

 

[Isoprop]

This is a dumb point, but could it be because the definition of a population is a group of individuals of the same species at the same time and place?

To answer your concern though, the issue of migration really refers to gene flow in or out of the system. If H-W was not expected because of migration, I believe it's because, strictly speaking, the population went from 500 to zero.

 

[StarryNights]

47 views and yet no one has other inputs??

 

[Econ2MD]

I assume the 500 guppies join the existing population of guppies and interbreed. The 500 guppies are the immigrants into the population. The question is asked sort of inside-out.

 

[badmintondr]

I agree with Econ2MD. I think you should be assuming there is a pre-existing guppy population at the other tributary so in reference to the whole new population, there was a migration of individuals. AKA no Hardy Weinberg