1.Describe the phenotypes and genotypes of the parents that you chose on the Punnett squares screen. 2. What percentage of offspring is white-eyed?

 1.Describe the phenotypes and genotypes of the parents that you chose on the Punnett squares screen.

2. What percentage of offspring is white-eyed? What percentage of offspring is red-eyed?

3. Did you mate Drosophila in the laboratory or did you perform genetic crosses using Punnett squares first? Why? Compare and contrast the data you collected from the Punnett squares to the data you collected from the Drosophila mating.

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4. In a mating between a red-eyed male fruit fly and a red-eyed heterozygous female, what percentage of the female offspring is expected to be carriers? What percentage of the male offspring will have white eyes?

5. Hemophilia, a blood disorder in humans, results from a sex-linked recessive allele. Suppose that a daughter of a mother without the allele and a father with the allele marries a man with hemophilia. What is the probability that the daughter’s children will develop the disease?

 

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