The introduction of T-DNA into plants involves (a) exposing the plants to cold for a brief period (b) allowing the plant roots to stand in water (c) infection of the plant by Agrobacterium tumefaciens (d) altering the pH of the soil, then heatshocking the ...
The two polypeptides of human insulin are linked together by (a) covalent bond (b) disulphide bridges (c) hydrogen bonds (d) phosphodiester bond.
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