![]() ![]() There are several methods that work well. However, in the context of in vitro fertilization choosing the sex of the child is very possible. The strong desire of many parents to choose the gender of their baby has spawned an industry of products and claims, but they amount to little more than snake oil and scams. There are also countless “magical” methods that have been advocated over the centuries – methods without any putative biological mechanism but are little more than superstition. None of these methods are very plausible and none have been shown to be effective. Methods include changes in diet, the timing of sex, and acidifying the vaginal canal. Some methods are based upon the fact that X chromosomes are slightly bigger than Y chromosomes, so it is believed Y sperm swim a bit faster. Various methods have been claimed to give an advantage to one type or the other. During insemination 10’s of millions of sperm are ejaculated with one ultimately fertilizing the egg. Methods for influencing the sex of the child therefore focus on affecting which type of sperm, X or Y, fertilizes the egg. ![]() Therefore the sperm dictates the sex of the child. Eggs can therefore only contribute an X, while 50% of sperm with be X and 50% Y. Eggs from the mother and sperm from the father each contribute one copy of the 23 chromosomes. Females have two X chromosomes, and males have one X and one Y. One of those chromosome pairs are the sex chromosomes – which come in two flavors, X (female) and Y (male). Human DNA is divided into 23 different chromosomes, with each cell having a pair of each. The short answer is that it is a scam (unless we are talking about artificial insemination, which I will discuss below).įirst, some basic biology. Is that a scam or can we really choose our next baby’s gender? But since I can not afford 20 more children and probably will only have one more, I would like to have a boy baby (Specialy my mom) hehe … many books on internet / and even doctors claim that they can help couples choose a certain gender. A member of the SGU forum asked the following question:
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