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females. The genes present on the X chromosome are said to be X linked. Many more genes are pre chromosome than found on the Y chromosome. Nonetheless, those genes found on the Y chromose Y linked. The Y chromosome is smaller than its homoloque, the X chromosome. Consequently, mos 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 diseas the disease or not (but they won't be ever carriers) XH XH = female, normal XH Xh = female, carrier Xh Xh = female, hemophilic XH Y = male, normal Xh Y = male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier.

females. The genes present on the X chromosome are said to be X linked. Many more genes are pre chromosome than found on the Y chromosome. Nonetheless, those genes found on the Y chromose Y linked. The Y chromosome is smaller than its homoloque, the X chromosome. Consequently, mos 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 diseas the disease or not (but they won't be ever carriers) XH XH = female, normal XH Xh = female, carrier Xh Xh = female, hemophilic XH Y = male, normal Xh Y = male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier.

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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in humans, as well as with many other animals, sex is determined by special sex chromosomes. An individuai 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 A 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 homoloque, 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 XH = female, normal XH Xh = female, carrier %3D Xh Xh = female, hemophilic %3D XH Y = male, normal Xh Y = male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier.
Transcribed Image Text:in humans, as well as with many other animals, sex is determined by special sex chromosomes. An individuai 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 A 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 homoloque, 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 XH = female, normal XH Xh = female, carrier %3D Xh Xh = female, hemophilic %3D XH Y = male, normal Xh Y = male, hemophilic a) Show the cross of a man who has hemophilia with a woman who is a carrier.
3. A woman who has hemophilia marries a normal man How many of their children wil fave hemophilia, and what is their sex? In humans, color vision is X-linked; the gene for color vision is located on the X chromosome but it is absent 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. 4. 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:3. A woman who has hemophilia marries a normal man How many of their children wil fave hemophilia, and what is their sex? In humans, color vision is X-linked; the gene for color vision is located on the X chromosome but it is absent 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. 4. 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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Hemophilia is am example of X linked recessive disorder.Females can be normal;carrier or affected.If both the copy of the alleles are normal;than female  will be normal and did not develop hemophilia.but if only one of copy of mutated allele for hemophilia is present; then female act as a carrier; but if both copies of mutated alleles are present; then females are affected by hemophilia.

Whereas males show XY sex chromosome; so; even  if the single copy is present; the male will be a hemophilic; and if no copy is present ;then male will be a normal.In this way male never act as a carrier of hemophilia.

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