HUMAN BIOLOGY: CONCEPTS - 9780134312729
8th Edition
ISBN: 2819260095972
Author: Johnson
Publisher: PERUSALL
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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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Students have asked these similar questions
A form of hemophilia is caused by a sex-linked (X-linked) recessive gene. A phenotypically normal woman whose father had hemophilia marries a man who suffers with hemophilia. What is the probability that their first daughter will have hemophilia?
Two 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)
Hemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have a son with hemophilia.
They would like to have one more child. What is the probability of having a child without hemophilia? Explain using a Punnett square.
Is it possible for a girl to be born with hemophilia? Explain.
Chapter 19 Solutions
HUMAN BIOLOGY: CONCEPTS - 9780134312729
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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- Hemophilia is 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. 1) What is the probability that their first son will have hemophilia? 2) What is the probability that their first daughter will have hemophilia?arrow_forwardJulie (a female) has hemophilia. Based on this information, what can we say about the genotypes of her parents? If Julie has children with a normal male, what is the chance that her sons have hemophilia? What is the chance that her daughters have hemophilia? A condition called Alport syndrome is caused by a dominant X linked allele. Males who have this condition usually have kidney failure, while females who are heterozygous for the condition have blood in the urine, but usually do not have kidney failure. A male has this condition and has children with an unaffected female What percent of his daughters will show any of the symptoms? What percent of his sons will show any of the symptoms?arrow_forwardHemophilia is a blood disorder which is sex-linked. A woman carrier has children with a normal man. Determine the chances for girls and boys with hemophilia. [Remember that females have the XX genotype and males have the XY genotype. Do not place an allele on the Y chromosome. Example: XN Xn for female; Xn Y for male]arrow_forward
- If you cross a female carrier of hemophilia with a normal, healthy male, what are the chances of having a male with hemophilia?arrow_forwardIn humans, hemophilia is a sex-linked condition and normal blood clotting (H) is dominant to the condition of hemophilia (h). A woman with hemophilia marries a normal man. The hat are the probabilities of them having children with hemophilia and their sexes?arrow_forwardHemophilia 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?arrow_forward
- Hemophilia is due to a sex-linked gene. It is recessive and found on the X chromosome. A woman who is a carrier for hemophilia marries a normal man. What will be the possible phenotypes of their children? (use the letter “H”)arrow_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_forwardHemophilia is a sex-linked trait. If you have a man with hemophilia (Genotype XhY) and a female carrier (Genotype XhXh). How many of the offspring would be affected?arrow_forward
- Consider a woman whose brother has hemophilia A but whose parents are healthy. What is the chance that she has inherited the hemophilia allele? What is the chance that the woman will conceive a son with hemophilia?arrow_forwardIf a person heterozygous for cystic fibrosis mates with another person heterozygous for Huntington’s disease, what are the chances of them passing these diseases to their offspring? Explain in details.arrow_forwardHemophilia, disease in which the blood lacks a clotting factor, is caused by an X linked recessive gene. Joe doe not have hemophilia and Lucille is heterozygous for the condition. What is the chance that their MALE child will have hemophilia? (Note: you are calculating the probability for their MALE children only, in other words if they have 1 male child, what is the probability that he will be born with the disease?) 0% 1/4 or 25% 2/4 or 50% 3/4 or 75% 4/4 or 100%arrow_forward
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