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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 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 but reason is false

D

If both assertion and reason are false.

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Study the four statements given below and answer the question which follow them. I) Inbreeding is necessary if we want to develop a pureline in animals II) inbreeding exposes harmful recessive genes that are eliminated by selection III) continuous inbreeding usually reduces fertility and productivity IV) inbreeding depression can be overcome by outcrossing How many of the above statements are correct?

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

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

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Assertion: Mutation breeding is a process through which one gene from a parent transfer in to another and produce recombinant similar to parent. Reason : - Somatic hybridization does not induce variation.

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

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.

Assertions : Breeding and development of cultivars resistance to diseases enhances food production. Reason : Cultivar resistance to disease reduces the dependece on use of fungicides and bacteriocides.

Fill up the blanks in the following paragraph by selecting the correct option. Inbreeding increase ul(i) . This inbreeding is necessary if we want to evolve a ul(ii) in any animal. Inbreeding exposes harmful ul(iii) genes that are eliminated by selection.