Question

question 15 of 20 which best describes the sex chromosomes in humans? a. males have two x chromosomes. b. males have two y chromosomes. c. females have one x and one y chromosome. d. males have two different chromosomes.

Explanation:

In humans, females have two X - chromosomes (XX), and males have one X and one Y - chromosome (XY). So males have two different chromosomes. Options A, B, and C are incorrect as males do not have two X or two Y chromosomes, and females do not have an X and a Y chromosome.

Answer:

D. Males have two different chromosomes.