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Name: ___________________________ Period: _____ Date: __________ Genetics Practice Problems 1. 4. If two green pod plants (Gg) are crossed what are the expected phenotypes of the offspring and genotypes of the offspring? Use the Punnett square to predict the % Phenotype and Genotype of the offspring. % Genotype % Phenotype Homozygous = _____ Green = _____ Heterozygous = ______ Yellow = _____ 5. In humans, tongue rolling is a dominant trait; those with the recessive condition cannot roll their tongues? If two people one is a hybrid (Rr) to roll tongue and one is a pure recessive (rr) to roll tongue what percent of the offspring could roll there tongue? % can roll tongue __________ 6. In purple people eaters, one-horn is dominant (H) and no horns are recessive (h). Use the Punnet Square showing the cross of a purple people eater that is hybrid for horns (Hh) with a purple people eater that does not have horns (hh). Summarize the genotypes & phenotypes of the possible offspring % Genotype % Phenotype Homozygous = _____ Horn = _____ Heterozygous = _____ No Horn = _____