What is the difference between a prezygotic reproductive barrier and a postzygotic reproductive barrier? Provide an example of each
What will be an ideal response?
Prezygotic reproductive barriers prevent members of different species from mating in the first place or keep fertilization from occurring if they do mate. (A zygote is a fertilized egg, so prezygotic means before fertilization.). There are many types of prezygotic barriers—organisms may differ in when they breed, where they breed, or in the details of their courtship rituals. Their sex organs may not fit together properly, preventing successful sperm transfer, or other factors may prevent fertilization even if sperm is transferred. Postzygotic reproductive barriers act after fertilization has taken place. Postzygotic barriers occur when mating produces hybrids that either don't survive or are sterile—unable to breed themselves. The mule, the offspring of a horse and a donkey, is sterile and cannot reproduce. Likewise, a liger, the product of the mating of a lion and a tiger, is sterile.
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Fill in the blank(s) with correct word