Class Notes (834,541)
Canada (508,588)
BIOA02H3 (474)
Lecture

Speciation

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Department
Biological Sciences
Course
BIOA02H3
Professor
Dr.Persaud
Semester
Winter

Description
Speciation Mechanisms of reproductive incompatibility fall into 2 categories: 1. PREZYGOTIC Reproductive Barriers Operate before fertilization occurs (a) Habitat Isolation -Therefore never come into contact (b) Temporal Isolation -Mating periods do not overlap. (c) Mechanical Isolation -Differences in size and shape of reproductive organs. E.g. Duck genitalia: male penis & female reproductive tract (d) Gametic Isolation -Eggs dont have appropriate chemical signals for sperm of another species -Or sperm is not able to atta
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