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Pregnancy sex determinationDecember 20, Some parents-to-be can't wait to find out whether they're having a boy or a girl, while others choose to put off knowing the sex until birth. Either way, a sonogram — the grainy, black-and-white image that results from an ultrasound scan — will be baby's earliest picture and a couple's first chance to see the developing fetus. Ultrasound uses high-frequency sound waves to produce an image on a screen of the baby in the mother's uterus. The scans are typically done twice during pregnancy, but the one done between 18 and 22 weeks is when the sonographer ultrasound technician might identify the gender of the baby, if parents want to know. Expectant parents who want their child's sex to remain a secret until birth are in the minority, said Dr.Fetal gender screening by ultrasound at 11 to 13(+6) weeks. BACKGROUND: To survey the accuracy of fetal gender determination during first trimester Tests ; Pregnancy; Pregnancy Trimester, First; Prospective Studies; Sex Determination . While not as romantic as twirling a wedding ring over your pregnant belly however, these tests are never done to determine sex alone as they. Sexual differentiation in humans is the process of development of sex differences in humans. It is defined as the development of phenotypic structures...the end of the story look at the video above ↑ ↑ ↑

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