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Inbreeding depression can be overcome by...

Inbreeding depression can be overcome by

A

Mating of animals of same breed, but having no common ancestors on either side of their pedigree upto 4-6 generations

B

Mating males of one breed with superior females of another breed

C

Interspecific hybridisation

D

All of these

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The correct Answer is:
A
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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 : 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.

(a) Explain how to overcome inbreeding depression in cattle. (b) List three advantages of inbreeding in cattle. (c) Name an improved breed of cattle.

a) What is inbreeding depression? b) Explain the importance of "selection" during inbreeding in cattle.

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

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.