For each of the five examples below, give the name of the isolating mechanism and specify if it is prezygotic or postzygotic isolation. a. In some bee population, only large bees are big enough to unfold flower petals and obtain nectar and pollen. b. A cross between two fish species occurs but development only occurs up to 16-cell stage. c. In drosophila, when sperm
Direction: For each of the five examples below, give the name of the isolating mechanism and specify if
it is prezygotic or postzygotic isolation.
a. In some bee population, only large bees are big enough to unfold flower petals and obtain nectar
and pollen.
b. A cross between two fish species occurs but development only occurs up to 16-cell stage.
c. In drosophila, when sperm form one species enters the other species, the sperm is immobilized and
unable to fertilized egg.
d. Fireflies have a unique lighting pattern. The frequency of lighting is species specific. Fireflies in the
same area will not mate with those having a different lighting frequency.
e. Two species of butterflies are found in northern Michigan, but one species is found only near rivers
and streams, the other near lakes.
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