6/5/2023 0 Comments Male age progressionIf that sperm carries a diminutive Y chromosome, the baby will be a boy. If that sperm carries a portly X chromosome, the egg turned embryo will give rise to a baby girl. Understanding these factors may help men prepare for the stages that await them.Īt the precise moment when a single sperm wiggles its way into an awaiting egg, the sex of the developing baby is defined. But medical experts are learning that between the boy and the man stand a variety of genetic, biological and social changes. Indeed, because men can reproduce well into old age, and do not experience cyclical hormonal changes, their health is regarded as fairly static. Men are often portrayed as big boys, differing from their younger selves only in the sums of money they spend on their toys.
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