MasteringBiology With eText - Access
7th Edition
ISBN: 9780321911940
Author: Johnson
Publisher: PEARSON
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Chapter 19, Problem 6AWK
Summary Introduction
To review:
The possibility of hemophilia to get inherited to female offspring as it is a sex-linked trait where mothers pass their affected gene to male offspring.
Introduction:
Hemophilia is a sex-linked or X-linked recessive disease, which is otherwise called as bleeder’s disease. A person with the affected recessive alleles lacks the blood clotting factor, which makes it difficult for the blood to clot during injury. The gene for the blood clotting factor is present in the X chromosome and it is inherited from parents to offspring. In general, two recessive alleles are necessary for the disease to get expressed and the dominant allele is represented as XH and recessive allele is represented as Xh.
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Hemophilia is a typical example of Sex-Linked Inheritance. If the man is hemophilic and marries a homozygous normal woman. What will be the genotype of the female child?
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Chapter 19 Solutions
MasteringBiology With eText - Access
Ch. 19 - If you might be a carrier of a gene for an...Ch. 19 - Prob. 2QCCh. 19 - Prob. 1CRCh. 19 - Prob. 2CRCh. 19 -
3. Distinguish between genotype and phenotype.
Ch. 19 - Describe the contributions of Mendel to the field...Ch. 19 - Explain how alterations of chromosome number and...Ch. 19 - Prob. 6CRCh. 19 - Prob. 7CRCh. 19 - Describe what is meant by sex-linked inheritance.
Ch. 19 -
9. Explain why lethal diseases caused by dominant...Ch. 19 - Prob. 10CRCh. 19 - All of the following statements about homologous...Ch. 19 - Prob. 2TYCh. 19 -
3. Which of the following statements correctly...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Which of the following results in the separation...Ch. 19 - Prob. 9TYCh. 19 - Prob. 10TYCh. 19 - What tool is used to determine the probabilities...Ch. 19 - Prob. 12TYCh. 19 - What is the basis for the tremendous genetic...Ch. 19 - Prob. 14TYCh. 19 -
15. Which of the following events or processes...Ch. 19 -
1. What fraction of the offspring of two...Ch. 19 -
2. Why is it that the range of resting blood...Ch. 19 - Prob. 3AWKCh. 19 - Geneticists often study patterns of gene transfer...Ch. 19 - Prob. 5AWKCh. 19 - Prob. 6AWKCh. 19 - Nondisjunction during meiosis can lead to the...
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- If a couple has six boys, what is the probability that a seventh child will be a girl?arrow_forwardIf diseases such as cardiovascular disease (hypertension and atherosclerosis) are familial, is this an indication that there is a genetic contribution to these traits? What would you do to confirm that genetics is involved in this condition?arrow_forwardDid the fact that Prince Albert and Queen Victoria were first cousins have anything to do with the fact that she carried the allele for hemophilia? Why or why not?arrow_forward
- Mr. and Mrs. Smith are concerned because their own blood types are A and B, respectively, but their new son, Richard, is blood type O. Could Richard be the child of these parents?arrow_forwardHemophilia is an X - linked , recessive trait . If a man who is normal , mates with a woman who is a carrier for the traitarrow_forwardIn humans, hemophilia is a sex-linked recessive disease, and the gene is located on the X chromosome. A man with hemophilia marries a woman with hemophilia. What is the probability of a son they have been a hemophiliac?arrow_forward
- Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs, but the mother is normal, her genotype must be: XhXh XHXh XHXH XhYarrow_forwardIn humans, hemophilia is a sex-linked recessive disease, and the gene is located on the X chromosome. A man with hemophilia marries a woman with hemophilia. What is the probability of a daughter they have been a hemophiliac?arrow_forwardA mother with blood type B gives birth to a child with blood type B. What could not be the blood type of the father?arrow_forward
- A man with blood type O marries a woman with blood type B. All eight of their children have blood type B. What is most likely the woman's genotype?arrow_forwardTwo forms of hemophilia are determined by genes on the X chromosome in humans. Assume that a phenotypically normal woman whose father had hemophilia is married to a normal man. What is their probability to have a son with hemophilia? (out of all children - not just the sons)arrow_forwardIn a disputed parentage case, the child is blood type O, while the mother is blood type A. What blood type would exclude a male from being the father? Would the other blood types prove that a particular male was the father?arrow_forward
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