If a homozygous red eyed fly was crossed with a white eyed fly, what percent of the offspring would be homozygous recessive? (White eyes are X-linked, recessive) A. What total percent of the offspring will be white-eyed? What percentage of offspring is red-eyed? D. 75%. 25%. What are the genotypes of each parent? a. of the offspring will be carriers of the white eye trait? Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male What percent of the offspring will have red eyes? Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male. A pedigree is not helpful to a counselor in predicting the probability of a recessive gene being present and the chances for an offspring to receive the gene and express the trait. What . Answer: 25% of the total offspring are white-eyed females (however, 50% of all females are white-eyed). total percent. In the fruit fly, Drosophila, eye color is a sex-linked recessive trait located on the X chromosome.Red eyes are dominant over white eyes. 10) In fruit flies the most common eye color is red. Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male. percent . Answer: 25% of the offspring are white-eyed males. total percent. E. 0% What are the genotypes of each parent? What are the genotypes of each parent? White eyes? What percent of the females will have red eyes? What . B. What . What . Кеу: 9. The full question sounds like this: In fruit flies (Drosophila), one eye color gene is X-linked, with a recessive white allele and a dominant red allele. of the offspring will be white-eyed? If a heterozygous female breeds with a white-eyed male, what percentage of the offspring are expected to have red eyes? In fruit flies, the gene for white eyes is sex-linked recessive. Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male. of the offspring will be carriers of the white eye trait? (R) is red and (r) is white. Problem 1: Crossing a white-eyed female and red-eyed male fly In a cross between a white-eyed female fruit fly and red-eyed male, what percent of the female offspring will have white eyes? _X Parents: What percent of the offspring … White eyes? a. False Each member of a class sampled a piece of PTC testing paper. In fruit flies, red eyes (R) are a dominant trait and white eyes (r) are recessive. Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male. Image Transcriptionclose. Using these ratios, what percentage of offspring is white-eyed? White eyes? d. What percent of the offspring will be carriers of the white eye trait? C. 50%. What are the genotypes of each parent? percent . Using the same information as for question #1, cross a heterozygous red-eyed female with a red-eyed male. d. What percent of the offspring will be carriers of the white eye trait? Key: Parents What percent of females will have red eyes? Answer: Red-eyed 1: White-eyed 1 50% red-eyed and 50% white-eyed, respectively, (2 marks) 3. of the offspring will be white-eyed? Describe the offspring phenotype and genotype ratios that resulted from crossing the parents that you chose on the Punnett squares screen. b. 2. c) What is the probability that this same mating will produce any white-eyed males? What fraction of the children will have red eyes? A mutation (or allele) of the gene for eye d. What percent of the offspring will be carriers of the white yel! 2. What total percent of the offspring will be white-eyed? 2. 100%. If white-eyed female flies are bred to red-eyed male flies, describe the expected offspring (assume all parental flies are true-breeding). 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