Class 12th Biology 2013 Set2 Delhi Board Paper Solution
Question 22
(a) Explain how to overcome inbreeding depression in cattle.
(a) Explain how to overcome inbreeding depression in cattle.
(b) List three advantages of inbreeding in ctalle.
(c) Name an improved breed of cattle.
Answer
(a) Inbreeding depression in Cattle is overcomed by mating the selected animals of breeding population with unrelated superior animals of same breed, to restore fertility and yield.
(b) Advantages of Inbreeding in Cattle:
(i) Helps in evolving a pureline in any animal.
(ii) It exposes harmful recessive genes that are eliminated by selection.
(iii) Helps in accumulation of superior genes.
(c) Improved variety of Cattle is Hisardale – a new breed of sheep developed by crossing Bikaneri ewes and Marino rams.
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