Name the 3 types of prezygotic speciation

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Presentation transcript:

Name the 3 types of prezygotic speciation

Behavorial Two types of reproductive barriers exist: prezygotic barriers, which are those that prevent mating from even occurring, and postzygotic barriers, which are those that reduce the likelihood that an offspring will survive after mating has occurred. One prezygotic reproductive barrier is behavioral isolation.

Temporal Temporal isolation means 'isolated in time,' so this is a mechanism that prevents species from mating because they breed at different times. These differences can be time of day, season, or even different years.

Habitat Sympatric speciation occurs when populations of a species that share the samehabitat become reproductively isolated from each other. This speciationphenomenon most commonly occurs through polyploidy, in which an offspring or group of offspring will be produced with twice the normal number of chromosomes.

Habitat

Habitat

Speciation https://www.youtube.com/watch?v=2oKlKmrbLoU (10 min)

Page 352 Investigating an Anole Lizard Population