A man and his wife are both carriers for a recessive disease allele. If the couple has a child, which of the following statements is true? The child willI be affected by the disease. The child will not be affected by the disease. The child has a 25 percent chance of being affected by the disease. The child has a 50 percent chance of being affected by the disease.

A man and his wife are both carriers for a recessive disease allele. If the couple has a child, which of the following statements is true? The child willI be affected by the disease. The child will not be affected by the disease. The child has a 25 percent chance of being affected by the disease. The child has a 50 percent chance of being affected by the disease.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 17CTQ: Can a male be a carrier of red-green color blindness?

See similar textbooks

Similar questions

Describe the chromosomal alterations and phenotype of cri du chat syndrome and Prader-Willi syndrome.
Analysis of X-Linked Dominant and Recessive Traits A young boy is color-blind. His one brother and five sisters are not. The boy has three maternal uncles and four maternal aunts. None of his uncles children or grandchildren is color-blind. One of the maternal aunts married a color-blind man, and half of her children, both male and female, are color-blind. The other aunts married men who have normal color vision. All their daughters have normal vision, but half of their sons are color-blind. a. Which of the boys four grandparents transmitted the gene for color blindness? b. Are any of the boys aunts or uncles color-blind? c. Is either of the boys parents color-blind?
The determiner for brown eyes (B) is dominant to blue eyes (b) and is not X-linked. A colorblind man with brown eyes, whose mother was blue-eyed, marries a blue-eyed woman having normal vision, whose father was colorblind. Show the expected phenotypes ratio of their children involving eye color, color blindness, and sex.
Describe four X-linked recessive disorders
Could a woman who expresses the x-linked color-blind trait have a son with normal vision?
Colour vision deficiency is an x-linked recessive disorder. A female whose father has colour vision deficiency has normal vision. What is her genotype?
Incontinentia pigmenti, a rare, X-linked dominant disorder inhumans, is characterized by swirls of pigment in the skin. If anaffected female, who had an unaffected father, has children with anunaffected male, what are the predicted ratios of affected andunaffected sons and daughters?
Color blindness is an X-linked genetic disorder. Choose the following genotype that represents a female with normal vision, but is a carrier of the color blind gene 1. XAY 2. XaXa 3. XAXa 4. Xay
Color-blindness (c) is a sex-linked recessive trait, while normal color vision (C) is dominant: If two normal-visioned parents have a color-blind son, what are the parent's genotypes? ~What are the chances that their children will be color-blind?
Can a male be a carrier of red-green color blindness? Provide explanation and Punnet square if applicable.
In humans color vision is X-linked, the gene for color vision is located on the X chromosome but is absent on the Y chromosome. Normal color vision (XN) is dominant over colorblindness (Xn). Suppose a colorblind man fathers the children of a woman with genotype XNXN. What is the genotype of the father? What proportion of daughters will be colorblind? What proportion of the sons will be colorblind?
Normal vision (XA) in humans is dominant to color blindness (Xa) and is X-linked. A man with normal vision, whose father was colorblind, marries a colorblind woman. What are the chances that a son will be colorblind? What are the chances that a daughter will be colorblind? The determiner for brown eyes (B) is dominant to blue eyes (b) and is not X-linked. A colorblind man with brown eyes, whose mother was blue-eyed, marries a blue-eyed woman having normal vision, whose father was colorblind. Show the expected phenotypes ratio of their children involving eye color, color blindness, and sex.