Does male testosterone levels affect the baby's gender?

Do men with high testosterone levels—those who are physically imposing and muscular—actually have a better shot at fathering boys compared to men with lower testosterone, such as those who are leaner or less physically developed?

No.

frozenskipper said:Do guys with high testosterone—you know, the strong, muscular types—actually have a better shot at fathering a boy compared to guys who are leaner or less physically imposing?

Not as far as I can tell.
It’s really more about the woman’s cycle—specifically whether she hits ovulation right before intercourse or if it happens a couple of days later.
Think of it like this: Y sperm (male) are the sprinters, while X sperm (female) are the marathon runners. The Y sperm are faster and might reach the egg first, but the X sperm are much hardier and can hang around in the female reproductive tract for up to five days, waiting to fertilize an egg that ovulates a bit later.
Of course, there are no guarantees in biology.

Not quite, those are genes... and chromosomes are what carry all those inherited traits. Basically, your phenotype is how you look on the outside based on what you picked up from your parents or grandparents, while your genotype is more about who you are on the inside—your core character and such...