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Assertion : A single outcross often help...

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

A

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

B

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

C

If assertion is true bur reason is false.

D

if both assertion and reason are false.

Text Solution

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The correct Answer is:
B
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Breeding method that help to overcome inbreeding depression is

Inbreeding depression can be overcome by outcrossing/crossbreeding/both out crossing and crossbreeding.

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The breeding method preferably used in cattle to overcome inbreeding depression is

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

Assertion : Single cell proteins can help to meet increasing demands of growing population. Reason : SCP now can be produced in high amount commercially, using low cost substrates.

Assertion : in out crossing, superior males of one breed are mated with superior females of another breed. Reason : Mating between males and females of different breeds is called interspecific hybridisation.

Assertion : Loss of vigour called inbreeding depression occurs when inbreeding is continued for many generations. Reason : Quarantine can be done to overcome the harmful effects of inbreeding depression.

Assertion :- Continuous and close inbreeding leads to reduction in fertility and productivity. Reason :- Continuous and close inbreeding increases homozygosity.

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