Question

(06.03 MC)

The gene for a certain syndrome is present on a Y chromosome. A man carries the gene for this syndrome. Which of the following is true about the inheritance pattern of the syndrome?

Only his son would have the gene for the syndrome.
Only his daughter would have the gene for the syndrome.
Both son and daughter would have the gene for the syndrome.
Neither son nor daughter would have the gene for the syndrome.

Answer 1

B only his son will have the gene for syndrome

Answer 2

Answer:

The correct answer is A. Only his son would have the gene for the syndrome.

Explanation:

Chromosomes are located in the nucleus of cells with DNA in them. There can be either X or Y chromosomes. If a cell has both X chromosomes then the organism will be a female and if a cell has a X and a Y chromosome then it will be a male. Since the syndrome is on a Y chromosome only his son would have it since females don't have any Y chromosomes.