Down's syndrome occurs in the ……….. pair of chromosome by increasing a chromosome.
If an albino man marries with a normal woman and $50$ offsprings are albino and $50$ are normal, the woman is
When an albino female plant of maizeis crossed with normal green male plant, all plants in the progeny are albino because
Epistasis and dominance are respectively
When two genetic loci produce identical phenotypes in cis as well as in trans position, they are considered to be
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