Question 31
Question 31 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
17. Inheritance
17.1. Chromosomes, genes and protei...

Describe the inheritance of sex in humans with reference to X and Y chromosomes

16. Reproduction
16.4. Sexual reproduction in humans

Describe the function of the placenta and umbilical cord in relation to the exchange of dissolved nutrients, gases and excretory products between the blood of the mother and the blood of the fetus

17. Inheritance
17.4. Monohybrid inheritance

Describe a sex-linked characteristic as a feature in which the gene responsible is located on a sex chromosome and that this makes the characteristic more common in one sex than in the other