SRY, SOX9, and the androgen receptor (AR) each carry out specific, critical steps in sex determination during embryogenesis. Are their functions limited to sex determination? Go to the website to look up each of these genes, and scroll down the page to where the bar graph shows the level of expression of the gene in various adult tissues. Notice the normalized intensity scale on the left tells us how high the level of expression is for the displayed gene. Write a paragraph on how specific or broadly distributed gene expression is for each of these genes and speculate on what that might tell us about the specificity of action of each gene.
