Anatomy & Physiology Reproductive #12

Question

Which statement best describes the sex chromosome(s) contained in mature sperm?

Answers

  1. Mature sperm only have a ‘Y’ chromosome.
    • Rationale:

      A mature sperm will have either an ‘X’ sex chromosome or a ‘Y’ sex chromosome. While it is possible for a mature sperm to have a ‘Y’ sex chromosome, this is not the best statement to describe mature sperm.

  2. Mature sperm only have an ‘X’ chromosome.
    • Rationale:

      A mature sperm will have either an ‘X’ sex chromosome or a ‘Y’ sex chromosome. While it is possible for a mature sperm to have an ‘X’ sex chromosome, this is not the best statement to describe mature sperm.

  3. Mature sperm will have both an ‘X’ and a ‘Y’ chromosome.
    • Rationale:

      A mature sperm will have either an ‘X’ sex chromosome or a ‘Y’ sex chromosome. It will not have both an ‘X’ and a ‘Y’ chromosome.

  4. Mature sperm will have either an ‘X’ or a ‘Y’ chromosome.
    • Rationale:

      The statement that best describes a mature sperm is that it will have either an ‘X’ or a ‘Y’ sex chromosome.

Overview

The ‘X’ and ‘Y’ sex chromosomes contained in mature sperm determine the gender of offspring.

Explanation

Learning Outcomes

The ‘X’ and ‘Y’ chromosomes are referred to as sex chromosomes. Mature sperm will have either an ‘X’ or a ‘Y’ chromosome. Each ovum contains an ‘X’ chromosome. An offspring with both an ‘X’ and a ‘Y’ is a male while an offspring with two ‘X’ chromosomes is a female.

Test Taking Tip

While there may be true aspects for each answer choice for this question, consider the word “best” when determining the correct choice.

Video Rationale