Question

Shanon doesn't get her period and is worried. She finds out she is XY and the SYR gene is not on the Y chromosome. What hormones are given to her at puberty?

1) Estrogen and progesterone
2) Testosterone and progesterone
3) Estrogen and testosterone
4) Progesterone and testosterone

Answer 1

Shanon would be treated with estrogen and progesterone to develop female secondary sexual characteristics during puberty, due to the lack of the SRY gene and subsequent absence of testosterone-driven male development.

Step-by-step explanation:

If Shanon has an XY chromosome but lacks the SRY gene on the Y chromosome, she did not develop male reproductive organs as would be typical for an individual with an XY chromosomal makeup. In this scenario, her body would not have produced testosterone for male development. Instead, to induce the development of secondary sexual characteristics and help her body's development during puberty, she would typically be given hormones that are associated with female development, which are estrogen and progesterone. Therefore, the correct answer is (1) Estrogen and progesterone.