ultrasound examination is performed to determine the sex of the baby during pregnancy. A baby's sex is more certain from the moment the pregnancy occurred as the baby's genetic, but must reach a certain size to be certain eye looking at it from the outside or ultrasound. When the ultrasound and the baby's sex at the earliest 3 months ending around 13 weeks so it is always clear from what followed more often not possible in 16-17 weeks. 20 weeks closer to gender are considered in the clearest way. Rarely can be error in the determination of gender, sex can be seen in a different month after ultrasound examination. This usually happens when the penis male infants are not followed. So if a man identified as the baby's gender is not much mistaken, because the penis was observed. However, it is more common in girls and error because it can create the illusion that the so-called baby girl can not be seen in the penis.
Ultrasound during pregnancy except amnosentez (amniotic water taken from the womb) or chorionic villus sampling, sex of the baby in the chromosomal analysis done by methods such as cordocentesis followed precisely. This study of female (XX) or male (XY) chromosomes are monitored.
In addition gender determination tests were made at home. These tests are not recommended due to some inconveniences can determine gender 80% accurate and is prohibited in some countries. Detailed information on this subject can be found at the following link.
gender test
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