MCQ
From which microbe was the first recombinant DNA produced by using a plasmid?
- AE. coli
- BAgrobacterium tumefaciens
- CSalmonella Typhimuriam
- DThermus aquaticus
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This type represents
$R$ - Plants comprises more than $22$ percent species.
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.