Prezygotic Reproductive Isolating Mechanisms
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Katelin King
Amarita Singh
Iann Tharp
Prezygotic is one of the two general
categories of reproductive isolating
mechanisms. Prezygotic takes effect before
fertilization occurs.
1) Habitat Isolation-
populations live in
different habitats and they don’t meet or have
the opportunity to mate.
Elephants in Africa cant
mate with Elephants in Asia.
2) Behavioral Isolation-
Little or no sexual
attraction between males and females.
Normally
Humans don’t have the urge to mate with other
species.
3)Temporal Isolation-
where mating or
flowering occur at different seasons or times of
day.
Western spotted skunk and eastern spotted
skunk cant mate because one mates in the
summer and the other in the winter.
If the first three barriers fail there are still
two other barriers that work to prevent
fertilization and reproduction of a cross
breed.
Prezygotic reproductive isolating mechanisms prevent mating or fertilization between different species before it can occur. Examples include habitat isolation, behavioral isolation, and temporal isolation. These mechanisms play a significant role in maintaining species integrity and preventing the formation of hybrids.
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Presentation Transcript
PREZYGOTIC Katelin King Amarita Singh Iann Tharp
ASSERTION Prezygotic is one of the two general categories of reproductive isolating mechanisms. Prezygotic takes effect before fertilization occurs.
EXAMPLE & EXPLAIN 1) Habitat Isolation- populations live in different habitats and they don t meet or have the opportunity to mate. Elephants in Africa cant mate with Elephants in Asia. 2) Behavioral Isolation- Little or no sexual attraction between males and females. Normally Humans don t have the urge to mate with other species. 3)Temporal Isolation- where mating or flowering occur at different seasons or times of day. Western spotted skunk and eastern spotted skunk cant mate because one mates in the summer and the other in the winter.
SIGNIFICANCE If the first three barriers fail there are still two other barriers that work to prevent fertilization and reproduction of a cross breed.
