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Title: A gene for eye colour in Drosophila occurs on the X chromosome. The allele for red eyes, XR, is ... Post by: Anna le on Jul 25, 2023 A gene for eye colour in Drosophila occurs on the X chromosome. The allele for red eyes, XR, is dominant over the allele for white eyes, Xr.
A heterozygous red-eyed female fruit fly was crossed with a white-eyed male fruit fly. Complete the following Punnett square for this cross. Answer Answer Answer Answer Answer Y Answer Answer options - XR, Xr - XXRR, XXRr, XXrr options for Y - XRY, Xry 2. Use the following information to answer the next two questions. Hemophilia is an X-linked disorder that affects the body’s ability to create blood clots. The allele for normal blood clotting, XH, is dominant over the allele for hemophilia, Xh. An unaffected female that is not a carrier mated with an affected male. Which of the following rows identifies the possible genotypes of the offspring? a. Female Male XHXh XHY and XhY b. Female Male XHXH and XHXh XHY c. Female Male XHXH and XHXh XHY and XhY d. Female Male XHXh XHY 3. An unaffected daughter from the above cross married a man who does not have hemophilia. Determine the probability of their offspring being A daughter with hemophilia A daughter without hemophilia A son with hemophilia A son without hemophilia Express your answer as a phenotypic ratio. Number: Answer Answer Answer Answer Phenotype: Affected female Unaffected female Affected male Unaffected male Title: Re: A gene for eye colour in Drosophila occurs on the X chromosome. The allele for red eyes, XR, is ... Post by: bio_man on Jul 26, 2023 Content hidden
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