Do twins require two sexual encounters?
If specific nature can be used overnight, it is unlikely to be like this. Women of childbearing age ovulate once a month, so there should be one chance of pregnancy per month. If the eggs discharged this month are not pregnant, then ovulation next month. If you become pregnant, your uterus and ovaries will terminate during menstruation. Not ovulating. Until the pregnant woman gives birth, the uterus and ovaries repair ovulation, the uterine wall repair changes regularly, and the physiological cycle reappears.
So, once the uterus and ovaries are difficult to ovulate during pregnancy, people are unlikely to conceive again. It is not difficult to see that whether twins give birth depends on whether the woman releases two eggs or the growth and development of the combination of sperm and eggs. If a woman ovulates twice in a physiological cycle and wants to produce twin eggs, their ovulation time must be different, and the fertilized eggs of the other two ovulations can be fully fertilized in a single intercourse.
Of course, twin eggs can also be the result of two sexual encounters. Even many people have reported that a pair of twin babies can have two different fathers. However, it is not necessary to have two sexual intercourse to give birth to twins, and no scientist believes that two sexual intercourse can improve the incidence rate of twin infants; The birth of monozygotic twins is entirely the result of one sexual intercourse, which is easy to understand. Men have physiological markers and a normal safe passage for ejaculatory exit; The urinary system has all normal blood night operations and nervous system operations, and can carry out married life.