Suppose that a group of male pied flycatchers migrated from a region where there were no collared flycatchers to a region where both species were present. Assuming events like this are very rare, which of the following scenarios is least likely?
A) The frequency of hybrid offspring would increase.
B) Migrant pied males would produce fewer offspring than would resident pied males.
C) Pied females would rarely mate with collared males.
D) Migrant males would mate with collared females more often than with pied females.
E) The frequency of hybrid offspring would decrease.
Asiatic Lion Male
Closeup of a male snow leopard
Hemophilia inheritance pattern between a female hemophilia carrier and a male without hemophilia.
Scientists (group photo)
Ultrasonogram showing a male fetus.
Hormonal control of the male reproductive hormones.