Every human being has at least one (1)____chromosome. In the presence of a y chromosome, the (2)____of the undifferentiated gonads will develop into (3)____Without a Y chromosome and specifically, the (4)____gene, the (5)____of the undifferentiation gonads will develop into (6)____The testes begin to develop around (7)____weeks, and the ovaries begin to develop around (8)____weeks. A. Ovaries E. Medulla B. Cortex F. 5-6 C 12-16 G. Testes H. SRY