In cold weather, which sperm is more active, Y sperm or X sperm?

This has nothing to do with the cold and warm weather. Compared with X sperm, Y sperm has better fluidity in alkaline solution, but it is poor in other aspects, that is, it is not acid-resistant, lacks durability and has a short life. Therefore, according to the arrangement of nature, the number of Y sperm is twice that of X sperm during ejaculation, so as to keep the birth rate of boys and girls balanced. Because a spermatogenic cell will split into two sperm cells, and one of them must be Y sperm and the other must be X sperm, there is no activity, and the chances of giving birth to boys and girls are the same. For reference.