Which of the following is NOT an example of reproductive isolation?
Adifferences in courtship song between two populations of meadowlarks B.difference in the timing of breeding seasons of male frogs
C.differences in food preferences between two populations of birds
D.failure of sperm and egg production in hybrids between two populations of insects
Adifferences in courtship song between two populations of meadowlarks B.difference in the timing of breeding seasons of male frogs
D.failure of sperm and egg production in hybrids between two populations of insects