Question

Inbreeding depression is overcome by employing

• A. Interspecific hybridisation
• B. Cross-breeding
• C. Out-crossing
• D. Infraspecific hybridisation

Answer 1

The correct option is C Out-crossing

Inbreeding
Inbreeding involves the mating of more closely related individuals within the same breed for 4 - 6 generations. The progeny obtained from such mating are evaluated and superior males and females are identified for further mating.


Inbreeding depression
Continuous inbreeding leads to inbreeding depression. Inbreeding depression is the loss of fertility and productivity (milk and meat) as a result of inbreeding.

Out-crossing
Out-crossing is the practice of mating of animals within the same breed which do not have common ancestors on either side of their pedigree upto 4-6 generations. The offspring of such a cross is called outcross. Out-crossing is the best breeding method for animals that are average in productivity (milk production), growth rate (meat production) etc., because this method helps overcome the inbreeding depression.


Final answer
a. Out-crossing.