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.
Calopteryx virgo male
The testes. In addition to producing sperm, the testes secrete the male sex hormones, primarily test
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The traditional human karyotypes derived from a normal female and a normal male
Human beta-globin–complex locus control region