1. A dominant gene (H) produces wire-haired texture in dogs; its recessive allele (h) produces smooth hair. Two heterozygous wire-haired individuals were crossed and their F1 progeny testcrossed. Determine the expected genotype and phenotype rations among the testcross progeny. Note: in a testcross, an individual with an unknown genotype is crossed with a homozygous recessive individual.

2. A white guinea pig, whose parents were black, is closed with a black guinea pig whose male parent was white and whose female parent was black. Two white offspring result. Determine the genotypes of all individuals mentioned. About which individuals is there some doubt?

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Reid Wolff
Reid WolffLv2
28 Sep 2019

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