Which situation is an example of a prezygotic barrier? a....

Name: Problem 16, Chapter 18: Biology for AP Courses
Uploaded: 2019-07-31T05:22:59-08:00
Duration: 1 min 29 s
Channel: Grant Castaneda
Description: Which situation is an example of a prezygotic barrier? a. Two species of fish produce sterile offspring. b. Two species of flowers attract different pollinators. c. Two species of insects mate, but the zygote does not survive. d. Two species of lizards mate, but the offspring dies before reproducing

Which situation is an example of a prezygotic barrier? a. Two species of fish produce sterile offspring. b. Two species of flowers attract different pollinators. c. Two species of insects mate, but the zygote does not survive. d. Two species of lizards mate, but the offspring dies before reproducing

Which situation is an example of a prezygotic barrier?
a. Two species of fish produce sterile offspring.
b. Two species of flowers attract different pollinators.
c. Two species of insects mate, but the zygote does not survive.
d. Two species of lizards mate, but the offspring dies before reproducing

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Key Concepts

Reproductive Isolation

Reproductive isolation refers to the set of mechanisms that prevent species from interbreeding, thereby maintaining distinct species boundaries. These mechanisms ensure that gene exchange is limited or eliminated between different species, which is vital for the process of speciation and the maintenance of biodiversity.

Prezygotic Barriers

Prezygotic barriers are mechanisms that prevent fertilization from occurring, acting before the formation of a zygote. They include behavioral, temporal, mechanical, and ecological isolation, among others, and work to stop mating or successful fertilization between species even if they come into contact.

Pollinator Specificity

Pollinator specificity is a form of ecological prezygotic isolation commonly found in flowering plants where different species attract different pollinators. This specificity reduces the likelihood of cross-pollination among species, thus reinforcing reproductive barriers and maintaining species integrity.

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