Sperm cells carrying the Y chromosome will

A always result in the conception of a female baby
B will result in the conception of twins more often than those carrying an X chromosome
C typically result in children with brown eyes
D usually carry less genetic material than those carrying the X chromosome do

I believe the correct answer is D

You are right. Since the Y chromosome has fewer genes than the X chromosome, the Y-bearing sperm will have less genetic material than the X-bearing sperm.

I hope this helps. Thanks for asking.

To determine the correct answer, we need to analyze the options presented and eliminate the incorrect ones:

Option A: "Sperm cells carrying the Y chromosome will always result in the conception of a female baby."
This statement is incorrect because sperm cells carrying the Y chromosome actually contribute to the conception of a male baby.

Option B: "Sperm cells carrying the Y chromosome will result in the conception of twins more often than those carrying an X chromosome."
This statement is incorrect because the determination of twins is influenced by factors such as genetics or fertility treatments, not by the Y chromosome of the sperm.

Option C: "Sperm cells carrying the Y chromosome typically result in children with brown eyes."
This statement is incorrect because eye color is determined by multiple genes, and the Y chromosome does not play a significant role in determining eye color.

Option D: "Sperm cells carrying the Y chromosome usually carry less genetic material than those carrying the X chromosome do."
This statement is correct. The Y chromosome is smaller than the X chromosome and contains fewer genes. Therefore, sperm cells carrying the Y chromosome carry less genetic material compared to those carrying the X chromosome.

Hence, the correct answer is D: Sperm cells carrying the Y chromosome usually carry less genetic material than those carrying the X chromosome do.