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When two unrelated individuals or lines ...

When two unrelated individuals or lines are crossed, the performance of `F_(1)` hybrids is often superior to both its parents. The phenomenon is called

A

Transformation

B

Splicing

C

Metamorphosis

D

heterosis

Text Solution

Verified by Experts

The correct Answer is:
D
The superiority of hybrids over either of the parents (dominant or recessive ) is called hybrid vigour (G Shull) . Heterosis is equivalent of hybrid vigour.
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  5. A polygenic trait is controlled by 3 genes A, B and C. In a cross AaBb...

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  6. If F(1) generation has all tall plants and ratio of F(2) generation is...

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  7. Multiple phenotype is seen in

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  8. How many contrasting traits of Pea pod were chosen by Mendel?

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  9. If a cross between two individuals produces offsprings with 50% domina...

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  10. Allelism refers to

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  11. Mendelian principles are not applicable in case of

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  12. Genotypic and phenotypic ratio in monohybrid cross remains the same in...

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  13. Mendel was successful in discovering the principles of inheritance as

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  14. Independent assortment means:

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  15. In Mendelian dihybrid cross, when heterozygous Round Yellow are self ...

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  16. The genotype of a plant showing the dominant phenotype can be determin...

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  17. Which one of the following cannot be explained on the basis of Mendel'...

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  18. Inheritance of flower colour is an example of incomplete dominance, wh...

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  19. The graphical representation to calculate the probability of all possi...

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  20. Genotypic ratio of a monohybrid cross is

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