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Ans: (3) Cross breeding
Explanation: Cross breeding is the process in which two individuals of different species are crossed.
'Hisardale' is a new breed of sheep in Punjab, formed by cross breeding between Bikaneri ewes and Marino rams.
Inbreeding depression is (1) Reduced fertility and productivity due to continued close inbreeding (2) Reduced motility and immunity due to close inbreeding (3) Decreased productivity due to mating of superior male and inferior female (4) Decrease in body ...
Embryological support for evolution was disapproved by : (1) Karl Ernst von Baer (2) Alfred Wallace (3) Charles Darwin (4) Oparin