Practice Sex Determination In Humans (4.6.1) - Principles of Inheritance and Variation

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6 sample questions

Question 1.
What determines the sex of a child?
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Think about which parent contributes the X or Y chromosome.
Question 2.
What are autosomes?
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What pairs do not involve X or Y?
3Question 3.
What chromosomes do males have?
- XX
- YY
- XY
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Think of how many X's and Y's are present.
4Question 4.
True or False: Females determine the sex of the child.
- True
- False
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Consider which parent contributes the Y chromosome.
Question 5.
A couple has two children, both boys. What is the probability that their next child will be a girl?
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Consider that each pregnancy is an independent event.
Question 6.
Design a simple genetic cross diagram showing a mother with genotype XX crossed with a father with genotype XY. What are the possible offspring?
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Ultimately this is a classic Punnett square outcome.

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