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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. The 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 b 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 X= female, normal X" X= female, carrier X X= female, hemophilic XY male, normal XY male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier. b) What is the probability that their children have the disease

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. The 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 b 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 X= female, normal X" X= female, carrier X X= female, hemophilic XY male, normal XY male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier. b) What is the probability that their children have the disease

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Sex linked traits
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. The 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 X= female, normal X" Xh= female, carrier X X= female, hemophilic X Y= male, normal XY= male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier b) What is the probability that their children have the disease
Transcribed Image Text: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. The 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 X= female, normal X" Xh= female, carrier X X= female, hemophilic X Y= male, normal XY= male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier b) What is the probability that their children have the disease
NANCE mega-3 S00 mg m Fish Oil MARTHEALTH 2. A woman who is a carrier for hemophilia has children with a normal man. Show the cross a) What is the probability that their children will have hemophilia? b) 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? 4. from the Y chromosome. Normal color vision (XN) is dominant over color blindness (X®). Suppose a color blind man fathers the children of a woman with the genotype XNXN. In humans, color vision is X-linked; the gene for color vision is located on the X chromosome but it is absent a. What genotype is the father? b. What proportion of daughters will be color blind? c. What proportion of sons will be color blind?
Transcribed Image Text:NANCE mega-3 S00 mg m Fish Oil MARTHEALTH 2. A woman who is a carrier for hemophilia has children with a normal man. Show the cross a) What is the probability that their children will have hemophilia? b) 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? 4. from the Y chromosome. Normal color vision (XN) is dominant over color blindness (X®). Suppose a color blind man fathers the children of a woman with the genotype XNXN. In humans, color vision is X-linked; the gene for color vision is located on the X chromosome but it is absent a. What genotype is the father? b. What proportion of daughters will be color blind? c. What proportion of sons will be color blind?
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