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Questions and Answers
What is the probability of having a baby girl, according to Mendelian genetics, for a couple who already has three sons?
What is the probability of having a baby girl, according to Mendelian genetics, for a couple who already has three sons?
- 75%
- 25%
- 50% (correct)
- 10%
In humans, which sex chromosomes are possessed by females and males respectively?
In humans, which sex chromosomes are possessed by females and males respectively?
- XX in females and XY in males (correct)
- XX in females and YY in males
- XY in females and YY in males
- XY in females and XX in males
Why are X-linked traits and disorders more commonly expressed in males than in females?
Why are X-linked traits and disorders more commonly expressed in males than in females?
- Females have more severe symptoms
- Males have only one copy of the X chromosome (correct)
- Females have more Y chromosomes
- Females have two X chromosomes
What is hemophilia characterized by?
What is hemophilia characterized by?
Which chromosome carries more genes, making it more commonly linked to genetic mutations and disorders?
Which chromosome carries more genes, making it more commonly linked to genetic mutations and disorders?
Why does a male manifest a sex-linked disorder if he inherits a certain allele?
Why does a male manifest a sex-linked disorder if he inherits a certain allele?
Why can females be carriers of a sex-linked disorder without showing symptoms?
Why can females be carriers of a sex-linked disorder without showing symptoms?
What causes color-blindness, particularly red-green color blindness?
What causes color-blindness, particularly red-green color blindness?
In terms of inheritance, what genotype represents a normal female carrier of hemophilia?
In terms of inheritance, what genotype represents a normal female carrier of hemophilia?
Why do men have a higher chance of being color-blind compared to women?
Why do men have a higher chance of being color-blind compared to women?
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