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Heterosis is also called
Options
(a) mutation
(b) hybrid vigour
(c) variation
(d) hybrid sterility
Correct Answer:
hybrid vigour
Explanation:
Hybrid vigour or heterosis is defined as the superiority of the hybrid over its parents in which expression of characteristics is greater in the heterozygous offspring than homozygous parents. It is lost on inbreeding. It is lost in the F₂ generation in self pollinated plants and declines slowly in cross pollinated plants. So it is more profitable in vegetatively propagated plants as they do not involve sexual reproduction and so hybrid vigour is not lost in subsequent crops. e.g., sweet potato, sugarcane, strawberry and grapes etc. The term was coined by G.H. Shull
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Topics: Enhancement in Food Production
(101)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Electrostatc precipitators are extensively employed to control
- The term ‘protobiogenesis’ is used for theory to
- Which of the following is not a sexually transmitted disease ?
- Which of the following is a recessive trait in garden pea?
- Hill reaction occurs in
Topics: Enhancement in Food Production (101)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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