All of the following are examples of prezygotic genetic isolating mechanisms EXCEPT: a) Male fireflies of different species have differing flash patterns. b) Three closely related orchid species flower on different days. c) The progeny of a cross between two different lizard species fail to develop properly. d) One species of snake lives in water and another is terrestrial. e) Peeper frogs mate in April, and tree frogs mate in June.
All of the following are examples of prezygotic genetic isolating mechanisms EXCEPT:
a) Male fireflies of different species have differing flash patterns.
b) Three closely related orchid species flower on different days.
c) The progeny of a cross between two different lizard species fail to develop properly.
d) One species of snake lives in water and another is terrestrial.
e) Peeper frogs mate in April, and tree frogs mate in June.
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Answer: c) The progeny of a cross between two different lizard species fail to develop properly.
Explanation: This is an example of a postzygotic isolating mechanism as it occurs after fertilization. Prezygotic mechanisms prevent mating or fertilization from occurring in the first place.
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