Timing of Intercourse Studies indicate that the sperm with the X chromosome - or female chromosome - have a longer life span than the male sperm with the Y chromosome. Yet the male sperm appear to have a higher motility. Sperm motility is measured in two ways: Poor motility means the sperm have a difficult time swimming toward the egg. It is said that the sperm carrying the Y chromosome uses energy faster than the sperm carrying the X chromosome.
The energy utilization is said to be due to the speed in which sperm swim. Supposedly, the Y sperm is speedy or contains less mitochondria whereas the X sperm is slower or carries more mitochondria. Mitochondria are the energy producing cellular components which are absolutely necessary for life. Sperm contain, and can only produce, so much fuel for their journey. If one sperm type swims faster than another, the consequence of that, of course, is faster arrival - but also faster expiration.
That said, if a woman knows her cycle and when she ovulates, the odds of baby gender prediction can be in one's favor. Sperm can reach the fallopian tubes in about 20 minutes to 2 hours. Sperm are viable for about days inside the woman. See some ways of gender prediction such as the Chinese gender chart or some old wives tales. At conception, the babies sex is determined by chromosome characteristics - The genetic sex of a child is established at conception based on the 23rd pair of chromosomes it inherits from the parent.
The mother's egg contains an X chromosome, and the father's sperm will contain either an X or Y chromosome. It is the male or rather the male's sperm that dictates whether the baby will be a boy or a girl. You want to have a Boy? It is believed that if intercourse takes place closer to ovulation, then the probability is greater that the child will be male, due to the high motility forward progression and also the decreased life span of the Y carrying sperm.
If you want a boy - aim for later intercourse before ovulation - say about 1 day before ovulation. Frequent intercourse around the time of ovulation. Have your partner wear boxers. A male with a high sperm count is more likely to have a boy. You want to have a Girl? The sperm with the X chromosome - or female chromosome - have a longer life span than the male sperm, but exhibit decreased motility.
Therefore, intercourse that takes place earlier may provide increased probability of a girl. You want - a girl. You know you ovulate 14 days before your next cycle. You must deliver sperm no closer than 4 days before ovulation.
If an X chromosome sperm fertilizes the egg, a girl will be conceived. The critical and perhaps not so obvious tip - don't repeat intercourse again for a week! Make sure fertilization is with 'mature sperm'. If you want a girl - aim for earlier intercourse before ovulation - at least 4 days before you ovulate.
If you are trying for a boy or girl, the planner will also suggest some actions that may influence the sex of the child, based on the scientific research of Dr Landrum Shettles and David M.
Rorvik, who published findings in a book called: