Question

The term heterosis means

• A. Appearance of spontaneous mutations
• B. Inducing mutations
• C. Mix of two or more traits
• D. Superiority of hybrids over their parents

Answer 1

The correct option is D Superiority of hybrids over their parents

Heterosis is a phenomenon in which progeny of diverse varieties of a species or crosses between species exhibit greater biomass, higher growth rate and fertility than both parents. It is also called hybrid vigour. It is done by crossing two different pure-bred lines that have certain desirable traits. Hence the hybrids formed are superior to their parents.

So, the correct answer is option D.