Question

Heterosis is also called(a) mutation (b) hybrid vigour(c) variation (d) hybrid sterility

Answer 1

(B) hybrid vigour..

Answer 2

Heterosis, also called hybrid vigour, the increase in such characteristics as size, growth rate, fertility, and yield of ahybrid organism over those of its parents. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits.
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