Question

which statement correctly describes the difference between the human x and y chromosomes?
a. the x chromosome is larger and carries many more genes, while the y chromosome carries fewer genes including those for male development.
b. both are identical except for size.
c. both carry the same genes in equal number.
d. the y chromosome carries more genes than the x chromosome.

Explanation:

• The X chromosome is larger than the Y chromosome.
• The X chromosome carries many more genes, including those not related to sex determination.
• The Y chromosome is smaller and mainly carries genes related to male development.

Answer:

A. The X chromosome is larger and carries many more genes, while the Y chromosome carries fewer genes including those for male development.