Sex Linked Genetic Disorders – Chromosome Theory and Sex Linkage
About the Lecture
The lecture Sex Linked Genetic Disorders – Chromosome Theory and Sex Linkage by Georgina Cornwall, PhD is from the course Understanding Genetics.
Included Quiz Questions
Which of the following best describes dosage compensation?
- X-inactivation of one of the X chromosomes in females to aid in not having two allelic copies compared to that in males
- Y-inactivation of one of the Y chromosomes in females to aid in not having two allelic copies compared to that in males
- X-activation of one of the X chromosomes in males to determine the male sex
- Y-activation of the Y chromosomes in males to determine the male sex
- Autosomal inactivation of recessive alleles so that those alleles do not manifest
Which of the following statements for an X-linked recessive disease is correct with respect to the progeny, when an unaffected male mates with a heterozygous female?
- Males will have a 50% chance of having the disease.
- Females will have a 50% chance of having the disease.
- All males will have the disease.
- All females will have the disease.
- All offspring will have the disease.
Which of the following statements for an X-linked dominant disease is correct with respect to the progeny, when an unaffected male mates with a heterozygous female?
- Both female and male progeny have a 50% chance of having the disease.
- All of the female progeny will be affected.
- All of the male progeny will be affected.
- 50% of the male progeny will be affected, while the female progeny will be unaffected.
- 50% of the female progeny will be affected, while the male progeny will be unaffected.
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Author of lecture Sex Linked Genetic Disorders – Chromosome Theory and Sex Linkage
Georgina Cornwall, PhD
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