3. In humans, hemophilia is a sex-linked recessive trait. If a female who is a carrier for hemopmilia marries a male with normal blood clotting, answer the following questions. a. What fraction of the female children will have hemophilia? b. What fraction of the female children will be carriers? c. What fraction of the male children will have normal blood clotting? d. What fraction of the male children will be carriers? e. What fraction of the male children will have hemophilia? hlind son C

3. In humans, hemophilia is a sex-linked recessive trait. If a female who is a carrier for hemopmilia marries a male with normal blood clotting, answer the following questions. a. What fraction of the female children will have hemophilia? b. What fraction of the female children will be carriers? c. What fraction of the male children will have normal blood clotting? d. What fraction of the male children will be carriers? e. What fraction of the male children will have hemophilia? hlind son C

Name: 3. In humans, hemophilia is a sex-linked recessive trait. If a female
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Description: 3. In humans, hemophilia is a sex-linked recessive trait. If a female who is a carrier for hemopmiliamarries a male with normal blood clotting, answer the following questions.a. What fraction of the female children will have hemophilia?b. What fract

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter12: Mendel, Genes, And Inheritance

Section: Chapter Questions

Problem 17TYK

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4. Marfan syndrome is a genetic trait caused by in a dominant allele. The trait causes a weakening of the aorta that can be fatal. A teenager whose mother has the syndrome (but whose maternal grandfather was not affected), and whose father was unaffected, is concerend that she may have the trait. a. What is the phenotype of each of her parents? Genotype? b. What is the chance that the teenager has Marfan syndrome?
1. A woman who is heterozygous for hemophilia marries a man with hemophilia. What are the genotypes and phenotypes of the children? a) What is the genotypic ratio of the above cross (Write number next to genotype)? ___________________________________________________________________ b) What is the phenotypic ratio of the above cross? (Write number next to phenotype)? ___________________________________________________________________
3. Hemophilia is a sex linked trait that does not allow for blood clotting normally. It is a recessive genetic defect. In the royal family, the mother of the Prince is a carrier for hemophilia. (XHXh) while the father is normal. ( XHY) . What is the genotype of the Prince if he carries the bleeder’s disease? What is the probability that all the female princesses are normal? Use the Punnett square to show your solution.
9. The factors for normal hemoglobin (S) and sickle-cell hemoglobin (s) are considered codominants: heterozygous individuals have some normal red blood cells and some sickle cells but are not considered to have the disease. A heterozygote is said to have the sickle-cell trait but not the disease. A. What is the genotype of a man with the sickle-cell trait? B. If normal man marries a heterozygous woman, what do you expect for the genotypes and phenotypes of their children? C. If 2 heterozygous people marry and have 3 children who don’t have the disease, what is the chance that their fourth child will have the disease? D. Assume that medical science finds a treatment for sickle-cell anemia so that people with the disease can live out a normal life span but their genes are not changed. If 2 people are saved from the effects of the disease, marry, and have children, what would you expect for the genotypes and phenotypes of their children? Would the children…
1. A mother with blood type A has a child with blood type O, What is the mother's genotype? 2. A mother with blood type B has a child with blood type O. What are the possible genotype of the father?
4. A man with blood type A and a women with blood type B have three children. A daughter with AB and two sons, one with type B and one with type O blood. What are the genotypes of the parents?
3.A woman is color blind. If she marries a man with normal vision, What are the chances of her a. sons being color blind? b. daughter being color blind? c. daughter being carriers?
6. A woman and a man, both with normal clotting blood, have a son who has hemophilia. Both of their daughtersare normal. (Note: Assume all possibilities in the children are represented.)a. What pattern of inheritance is this?b. What is the genotypes of the parents?c. If they decide to have another child, what is the chance it will be a boy who has hemophilia? A girl whohas hemophilia?
6. Consider that people with blue eyes must have two alleles for blue eyes since blue eye color is a recessive trait. A blue-eyed person and a brown-eyed person have an offspring with blue eyes. The brown-eyed person must A. have two alleles for blue eyes. B. have two alleles for brown eyes. C. not have the dominant brown eye allele. D, have one allele for blue eyes and one allele for brown eyes.
1. A mother with blood type A has a child with blood type O, and she claims that Mister X is the father. Mister X denies that he could possibly be the father, because he has blood type B. If you were the judge presiding over this case, which of the following arguments would you find most convincing? a. Mr. X could be the father if his blood genotype is IBIB, and the mother’s blood genotype is IAIA b. Mr. X cannot be the father because a child with blood type O cannot have a parent with blood type B c. Mr. X could be the father if his blood genotype is IBi, and the mother’s blood genotype is IAi d. Mr. X cannot be the father because a parent with blood type B cannot have a child with blood type O e. Mr. X cannot be the father because the human ABO blood types are sex-linked traits 2. A monohybrid cross between two pea plants producing yellow peas, resulting in an F1 phenotypic ratio of 3:1 (three yellow pea plants to one green pea plant) indicates what about the parental pea plants?…
7. The ability to roll your tongue (R) is dominant to lack of this ability (r). A. What is the genotype of a man who can roll his tongue if his father couldn’t? B. If a man who is heterozygous for tongue rolling marries a woman who is heterozygous, what would you predict for the genotypes and phenotypes of their children?
3. A couple just had a baby, who has type-O blood. Upon learning the baby’s blood type, the father becomesinfuriated and accuses the mother of cheating on him. The mother has type-A blood and the father has type-Bblood. Knowing that the allele for type-O is recessive, answer the following questions.a. What is the relationship between the IA, IB, and i alleles?b. Is the father right? Or is he falsely accusing the mother? Explain. Include the genotypes of the parentsand the genotypes of their potential children.