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Assertion : In breeding increases homozy...

Assertion : In breeding increases homozygosity exposing harmful recessive genes, some of which are eliminated by selection.
Reason : Continued inbreeding reduces fertility and productivity.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Inbreeding increases homozygosity exposing harmful recessive genes, some of which are eliminated by selection.
Continued inbreeding reduces fertility and productivity.
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Assertion (A) : Inbreeding increases homozygosity thus helps in developing a pureline in any organism. Reason (R) : Continued inbreeding leads to heterosis

Study the following statements regarding inbreeding and select the incorrect ones. (i) The inbreeding strategies allow the desirable qualities of two different breeds to be combined. (ii) It increases homozygosity. (iii) It also helps in elimination of less desirable genes. (iv) Continued inbreeding increases fertility and productivity.

Go through the following statements regarding inbreeding and select the incorrect ones . (i) The inbreeding strategies allow the desirable qualities of two different breeds to be combined . (ii) It increases homozygosity . (iii) It also helps in elimination of less desirable genes . (iv) Continued inbreeding increases fertility and productivity .

Assertion. Inbreeding increases homozygosity thus helps in developing a pureline in any organism. Reason. Continued inbreeding leads to heterosis.

Assertion :- Inbreeding is necessary if we want to evolve a pure line. Reason :- Inbreeding exposes harmful recessive gene that are eliminated by selection .

Read the following five statement (A to E) and select the option with all correct statements: (A) Animal husbandrt is the agricultural partice of breeding and raising livestock (B) Crosses between different breeds are called inbreeding. (C )Breedin g of animals is an important aspect of animal husbandrt. (D) Inbreeding exposes harmful recessive genes that are eliminated by selection. (E) Outbreeding is necessary if we want to evolve a pureline in any animal.

Assertion : A single outcross often helps to overcome inbreeding depression. Reason : Out-crossing is best breeding method for increasing milk productivity.

Assertion :- Inbreeding depression can be over come by mating of selected animals of the bread with unrelated animals of the same breed. Reason :- This helps to restore fertility & yield by increase in heterozygosity.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A: A single out cross helps to overcome below average growth rate in beef cattle. R: Inbreeding depression resulting in reduced fertility and productivity is overcome by outcrossing.

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