Interspecific crosses are rare in nature | Class 12 Biology Chapter Strategies for Enhancement in Food Production, Strategies for Enhancement in Food Production NCERT Solutions

Previous / historical NCERT chapter

This chapter belongs to a previous NCERT/CBSE curriculum and is not part of the current 2026-27 chapter list. Removed in 2022-23.

Welcome to the NCERT Solutions for Class 12 Biology - Chapter Strategies for Enhancement in Food Production. This page offers a step-by-step solution to the specific question from Exercise 0, Question 20:

Interspecific crosses are rare in nature and intergeneric crosses almost unknown. Why?

. With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.

Question 20:

Interspecific crosses are rare in nature and intergeneric crosses almost unknown. Why?

Answer:

In interspecific crosses, male and female animals of two different related species are being mated. In some cases, the progeny may combine desirable features of both the parents and can be of considerable or desirable economic value. E.g., the mule.

An interspecific hybrid’s fertility varies from different points. Many of Panthera species varieties like tigers, lions, leopard hybrid males are infertile, while the female counterparts can breed with the species that she contains (female tigers can breed with a lion or tiger to produce ligers or tigers). These are rare in nature.

Intergeneric hybridization is the crossing of two different animals or plants of different genus. It is almost unknown in nature. Intergeneric hybrids more or less never form a complete zygotes or an embryos. These are sterile or we can say infertile.   

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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 20: Interspecific crosses are rare in nature and intergeneric crosses almost unknown. Why?....

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