Imagine That in One Portion of Their Range, Black Widowbird

Multiple Choice

Imagine that in one portion of their range, black widowbird numbers are declining due to the introduction of a non-native snake that eats their eggs and nestlings. The last two remaining females in this population disperse to join a different population that is 50 km away. Breeding with males in this new population would introduce new genes and is an example of __________.

A) alleles
B) gene flow
C) meiosis
D) adaptive radiation