USDA Section 508 Reference Manual

The gene for eye colour in humans has 2 alleles, blue and brown. The brown allele is represented by “B” and the blue allele by “b”. BB. Brown. bb. Blue. Bb. ... known as the new born blood spot test involves analysing a sample of blood that is taken from pricking a baby's heel. It detects genetic disorders in order to treat them early. ................
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