You decide to breed a pair of guinea pigs, one black and one white. In guinea pigs,

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You decide to breed a pair of guinea pigs, one black and one white. In guinea pigs, black fur is caused by a dominant allele (B) and white is due to homozygosity for a recessive allele (b) at the same locus. Your guinea pigs have seven offspring, four black and three white. What are the genotypes of the parents? Why is there a 1:1 ratio in this cross?

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Human Biology

ISBN: 9781305264540

11th Edition

Authors: Cecie Starr, Beverly McMillan

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