Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 20, Problem 5CT
Summary Introduction
To explain: The probability of the first male child of a woman unaffected by hemophilia A but had a father with hemophilia A and marries a man with hemophilia A.
Introduction: Hemophilia A is an X-linked homozygous recessive genetic disorder. Probability in genetics is used to determine the outcome of genotypes of offspring and the probability of its occurrence when parent genotypes are known.
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What is the genotype of a normal man whose father had hemophilia?
State the probability that a child with a carrier mother willhave hemophilia A.
Determine the probability of a hemophiliac son with brown eyes being born when the father has blue eyes and does not have hemophilia, the mother is has brown eyes and does not have hemophilia, the mother's father has blue eyes and hemophilia. Please back up your answer with a full Punnett square.
Chapter 20 Solutions
Human Biology (MindTap Course List)
Ch. 20 - Prob. 1RQCh. 20 - What is a carrier of a genetic trait?Ch. 20 - What evidence indicates that a trait is coded by a...Ch. 20 - Prob. 4RQCh. 20 - Explain what nondisjunction is, and give two...Ch. 20 - _______ segregate during ______. a. Homologues;...Ch. 20 - Prob. 2SQCh. 20 - Genes on the same chromosome tend to stay together...Ch. 20 - Prob. 4SQCh. 20 - A chromosomes structure can be altered by _______....
Ch. 20 - Nondisjunction can be caused by ________. a....Ch. 20 - A gamete affected by nondisjunction could have...Ch. 20 - Genetic disorders can be caused by __________. a....Ch. 20 - A person who is a carrier for a genetic trait...Ch. 20 - Prob. 10SQCh. 20 - If a couple has six boys, what is the probability...Ch. 20 - Human sex chromosomes are XX for females and XY...Ch. 20 - People with Down syndrome have an extra copy of...Ch. 20 - Prob. 4CTCh. 20 - Prob. 5CTCh. 20 - About 4 percent of people of Northern European...Ch. 20 - The following pedigree shows the pattern of...
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- A normal woman, whose father was a hemophiliac, marries a normal man. Determine the genotype of the woman and the man. Determine the possible genotypes of their children. What percent of male and female children would be hemophiliacs? What percent normal? Would any be carriers?arrow_forwardA father without hemophilia (X HY) has two daughters and two sons. Neither daughter has hemophilia. One son has hemophilia and the other does not. What is the genotype of the mother? O A XHXH O B. XHxh O c xhy O D. XHY acerarrow_forwardWhat is the form an individual with sickle-cell anemia?arrow_forward
- In humans, as well as with many other animals, sex is determined by special sex chromosomes. An individual containing two X chromosomes is a female, while an individual possessing an X and Y chromosome is a male. he sex chromosomes bear alleles for traits. Sex linkage applies to genes that are located on the sex chromosomes. These genes are considered sex-linked because their expression and inheritance patterns differ between males and females. The genes present on the X chromosome are said to be X linked. Many more genes are present on the X chromosome than found on the Y chromosome. Nonetheless, those genes found on the Y chromosome are said to be Y linked. The Y chromosome is smaller than its homologue, the X chromosome. Consequently, most of the loci present on the X chromosome are absent on the Y chromosome. 1. In humans, hemophilia is a sex linked trait. Females can be normal, carriers, or have the disease. Males will have the disease or not (but they won't be ever carriers) XH…arrow_forwardThe term "hematopoiesis" refers to:arrow_forwardWhat is the genotype of an individual with PKU?arrow_forward
- D. Sex-linked In humans, hemophilia is a sex-linked trait. Females can be normal, carriers, or have the disease. Males will either have the disease or not (but they won't ever be carriers). 1. Show the cross of a man who has hemophilia with a normal woman. What is the probability that their children will have the disease? H H = female, normal H h X X = female, carrier h xxn XHY X" Y 2. A woman who is a carrier marries a hemophiliac man. Show the cross. What is the probability that their children will have hemophilia? What sex will a child in the family with hemophilia be? 3. A woman who has hemophilia marries a normal man. How many of their children will have hemophilia, and what is their sex? = female, hemophiliac = male, normal = male, hemophiliacarrow_forwardA parent has type O blood what blood types would his/ her children have and are there any blood types his/her children can't have?arrow_forwardWhat are some clinical features of hemmorhage?arrow_forward
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