The SRY gene is best described as ________.
A) a gene present on the X chromosome that triggers female development
B) an autosomal gene that is required for the expression of genes on the Y chromosome
C) a gene present on the Y chromosome that triggers male development
D) an autosomal gene that is required for the expression of genes on the X chromosome

Question

Quizplus · Accepted Answer

The SRY gene, also known as the sex-determining region Y gene, is located on the Y chromosome and triggers the development of male characteristics. It codes for a protein that activates the expression of other genes involved in male development. Therefore, choice C, "a gene present on the Y chromosome that triggers male development" is the best description of the SRY gene.

Option A is incorrect because there is no gene on the X chromosome that triggers female development. The presence of two X chromosomes leads to female development. Option B is also incorrect because genes on the Y chromosome do not require an autosomal gene for their expression. Finally, option D is incorrect because there is no autosomal gene that is required for the expression of genes on the X chromosome.

The SRY Gene Is Best Described as ________