Answered: An individual that is genetically male…

An individual that is genetically male develops as a female. Is this individual more or less likely to express an X-linked recessive disorder than an average female?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter4: Pedigree Analysis In Human Genetics

Section: Chapter Questions

Problem 17QP: Analysis of X-Linked Dominant and Recessive Traits A young boy is color-blind. His one brother and...

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An individual that is genetically male develops as a female. Is this
individual more or less likely to express an X-linked recessive
disorder than an average female?

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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?
What will be the sex of an individual who is easily affected by an X-linked recessive trait? Why?
Explain the difference between X-linked recessive traits and X-linked dominant traits. What are the possibilities that a female child will be affected and express each of the traits?
Can a woman who is affected by an X-linked dominant disorder have a child who is not affected? Why or why not?
Can males be a carrier of an X-linked recessive trait? How about females?
Which of the following statements about X-linked recessive inheritance is true? X-linked recessive traits appear more frequently in females than males. X-linked traits are only found in humans. Females who are carriers of an X-linked recessive trait may not exhibit any phenotypic effects. Males have two allele copies of X-linked genes.
which Genotype below is considered a carrier for an x-linked recessive disorder?
If a father is affected by an X-linked dominant condition and the mother is normal, what is the probability of their children being affected? All sons will be affected. Half of the sons will be affected. All daughters will be affected. Half of the daughters will be carriers.
An individual with 46, XX genotype is diagnosed with Duchenne-type Muscular Dystrophy, a recessive X-linked disorder. Genetic tests confirm that this individual is a heterozygote for this disorder. Briefly, but specifically, explain how it’s possible that they are showing symptoms of this disorder.
A mother is a carrier of a recessive X-linked disorder. What are the chances of her offspring being afflicted by this disorder assuming a healthy father? 100% chance for male offspring; ~0% chance for female offspring 50% chance for male offspring; ~0% chance for female offspring 0% chance for male offspring; ~0% chance for female offspring 25% chance for male offspring; ~25% chance for female offspring 50% chance for male offspring; ~50% chance for female offspring
A color-blind man marries a woman with normal vision whose father was color-blind. Remember that color-blindness is an X-linked recessive trait. Hint: see figure 12.7 in book. A) What is the probability that their first child will be a color-blind daughter? B) What is the probability that their first son will be color-blind?
Duchenne muscular dystrophy (DMD), marked by muscular degeneration, results from an X- linked recessive gene. Thus, a female who is heterozygous for this gene and does not have the disease can be a carrier. What kind of offspring can you expect from a DMD-affected male and a carrier female? Can there be a carrier male?