32.1 - Midway Assessment - Prezygotic-Isolating Mechansims

Last updated about 1 year ago

3 questions

Required

Prezygotic-isolating barriers are things that stop or hinder the development of a zygote. They are barriers before fertilization. These barriers can by temporal or based on time or season. They can be mechanical based on a size difference that prevents mating. They can be certain behaviors that prevent mating like different courtship dances, calls, etc. Or two similar animals are simply too far away for mating to occur. 

32.1 - Midway Assessment - Prezygotic-Isolating Mechansims

Last updated about 1 year ago

3 questions

Required

Match the Prezygotic Barrier choices with their definitions.

Draggable item		Corresponding Item
when two species have different courtship behaviors		Temporal barrier
when physical differences prevent mating or pollination		Behavioral barrier
when two species mate at different times of the year		Mechanical barrier
when two species occupy different habitats		Habitat barrier

Prezygotic-isolating barriers are things that stop or hinder the development of a zygote. They are barriers before fertilization. These barriers can by temporal or based on time or season. They can be mechanical based on a size difference that prevents mating. They can be certain behaviors that prevent mating like different courtship dances, calls, etc. Or two similar animals are simply too far away for mating to occur. 

Match the Prezygotic Barrier choices with their definitions.

Lions and tigers can potentially interbreed but they usually occupy different areas.
Certain groups of birds will only respond to species-specific mating calls.
Frogs live in the same pond but breed during different seasons (summer vs. spring).
Certain breed of dogs are morphologically incapable of mating due to size.

Temporal barrier
Habitat barrier
Behavioral barrier
Mechanical barrier