A Boy or a Girl

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Y chromosome

Do you know your genetics decide whether you will have a boy or a girl?   Not a big discovery since we know that the sex of a child depends on the X and Y chromosomes. Y-Chromosome DNA Testing is used to identify babies’ sex, But did you know about the new ways of finding out the sex of the baby before the 16 weeks ultrasound? Read more to learn more.

What determines sex?

A chromosome is a thread-like structure that carries DNA material in it. There are 23 pairs of chromosomes in a human being. The first 22 pairs of chromosomes are known as “autosomal,” and they are identical in both sexes.
However, the chromosomes of pair 23 differ between males and females and are called sex chromosomes:
Males have XY sex chromosomes and females have XX chromosomes.

Y chromosome DNA testing

New technology for determining your baby’s gender

There are many ways in which you can find the sex of the child before a 16week ultrasound. Such as

1. Cell-free DNA: We can identify bits of DNA from placental cells in the mother’s bloodstream as early as the sixth week of pregnancy using cell-free fetal DNA in maternal blood.
• It allows us to determine if the baby has any chromosomal abnormalities using a non-invasive screening technique that takes a sample of the mother’s blood.
• It is possible to establish the fetal sex and thus check if there are any anomalies in the sex chromosomes in the infant.

2. Screening test
• This test looks at the DNA of placental cells. The existence of a male fetus is due to the presence of a Y chromosome. As a result, if no Y chromosome fragment is found, the presumed sex is female.
• If there is a Y chromosome present in a twin pregnancy, we may conclude that at least one of the unborn children is male; but if there is no Y chromosome, we can infer that both fetuses are female.

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