A hybrid man for Huntington's disease is crossed with a hybrid woman for Huntington's disease. What are the %

Question: What are the % of genotypes and phenotypes of the offspring? Also, how do you set up the punnett square? I wasn't there. If you don't feel like doing the whole square, just tell me how to set it up. Or, you could tell me what a hybrid for Huntington's disease is and if the gene is recessive or dominant.

Answer: Hybrid means heterozygous. Huntington's disease is probably recessive. We'll use "H" as the dominant and "h" as the recessive. If the individuals are hybrid, then their genotype is "Hh". The cross would be Hh X Hh. Set up the Punnett Square and you should receive a % genotype of 25% HH, 50% Hh, and 25% hh. The phenotype would be 75% Normal, 25% with Huntington's.

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