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CBSE Class 12-science Answered

(i) Give the scientific name of the soil bacterium which produces crystal (Cry) proteins. (ii) How are these proteins useful in agriculture? (iii) What do the differently written terms 'Cry' and 'cry' represent respectively?
Asked by Topperlearning User | 10 Jun, 2014, 04:38: PM
answered-by-expert Expert Answer

(i) Bacterium Bacillus thuringiensis produces crystal (Cry) proteins.

(ii) Cry proteins are toxic to certain larvae of insects and thus, provide resistance from them. The gene encoding Cry proteins are incorporated in several crop plants (Bt toxin). Such a crop plant is resistant to the particular insect pest.

(iii) Cry represents crystal protein while cry refers to the gene encoding the cry protein.

Answered by | 10 Jun, 2014, 06:38: PM
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