High milk yielding varieties of cows are obtained by which of the following methods?
(a) Super ovulation
(b) Artificial insemination
(c) Use of surrogate mothers

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(a) and (b) only

(b) and (c) only

(a) and (c) only

(a), (b) and (c)

answer is D.

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Detailed Solution

High milk yielding varieties of cows are obtained by super ovulation, artificial insemination and use of surrogate mothers. In artificial insemination, semen of a selected male is artificially deposited into the vagina of a selected female. Multiple Ovulation Embryo Transfer (MOET) is a program which improves the chances of successful production of hybrids. It involves the stimulation of healthy and high-milk yielding breed of female animals by injecting gonadotrophic hormones to release more eggs from the ovaries. Embryo at 8-32 celled stage can be recovered non-surgically from the female and then transferred into the surrogate females for implantation and further development.

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