>>21959406>everyone is a female a conception, you only become male after 6 weeks if you have a Y chromosomeSex is determined at the point of fertilization. In theory, a DNA test even at this point will reveal the person's gender. 6 weeks is the point at which the bipotential gonads differentiate based on sex. Differentiation of secondary sex characteristics (such as pelvic development, for example) is already present before 6 weeks, though.
