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As a small change in a person's dna can cause a genetic disorder

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?