On the Island of Madeira, Two Populations of House Mice

Multiple Choice

On the island of Madeira, two populations of house mice have accumulated different Robertsonian translocations.Which are true about these two populations of mice? (Select all that apply. )

A) They have fewer chromosomes than mice in other areas of the world.
B) They are isolated from each other geographically.
C) If mice from different populations mate, their offspring are sterile.
D) Mice from different populations are unable to mate with each other.
E) They are becoming extinct because of semisterility.