Question

Distinguish the terms interspecifc sterility and hybrid sterility. 

24 Apr 2023
Answer :
Word Count : 567

Interspecific sterility and hybrid sterility are two terms used in biology to describe the reproductive barriers between different species or populations. Although they may seem similar at first, they actually refer to distinct mechanisms that prevent the interbreeding of different groups.

Interspecific sterility, also known as post-zygotic isolation, is a type of reproductive barrier that occurs after fertilization has taken place. In this case, two individuals from different species are able to mate and produce offspring, but the resulting hybrids are either sterile or have reduced fertility. This means that they are unable to produce viable offspring with either parent species or with other hybrids, preventing the gene flow between the two populations. Interspecific sterility can be caused by a number of factors, including chromosomal incompatibilities, genetic incompatibilities, and developmental abnormalities.

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