Question

The hybrids are generally found to be superior to their parents, it is because of

• A. Homozygosity
• B. Hybrid vigour
• C. Parents are generally weak
• D. None of the above

Answer 1

Answer: (B)

Hybrid vigour

Heterosis is also called as hybrid vigour. It is the increase in such characteristics as size, growth rate, fertility and yield of a hybrid organism over those of its parents. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits. Because of this, hybrids are generally found to be superior to their parents. Thus, the correct answer is option B.