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CBSE Class 12-science Answered

(i) Give two important contributions of Dr M. S. Swaminathan. (ii) Interspecific crosses are rare in nature and intergeneric crosses are almost unknown. Why?
Asked by Topperlearning User | 12 Jun, 2014, 11:10: AM
answered-by-expert Expert Answer

(i) Two important contributions of Dr M. S. Swaminathan are

 (a) Development of high-yielding varieties in rice. Example: Basmati rice

 (b) Development of light-coloured wheat variety of Sharbati Sonora and Pusa Lerma from red-coloured Mexican wheat by gamma irradiation.

(ii) Unrelated chromosomes in interspecific crosses and intergeneric crosses differ considerably and fail to pair during gametogenesis.

Answered by | 12 Jun, 2014, 01:10: PM

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