The possibility of having a boy or a woman according to genes

Did you know that the likelihood of having a boy or a girl is determined by
genes? After all, foetal sex relies on whether the sperm cell lugs an X or Y
sex chromosome. Do you wish to know why? It's all in this post, where we
likewise talk with you about the new techniques for learning the sex of your
infant before your 16-week ultrasound scan.

What is the hereditary distinction between a women and also a male embryo?
We have currently seen this in short articles such as What is DNA?, in each of
our cells, humans have 23 sets of chromosomes (overall, 46 chromosomes).

The initial 22 pairs of chromosomes are called "autosomal" and coincide in both
sexes.

However, the chromosomes of set 23 are different in men as well as ladies and
also are called sex chromosomes:

Pair 23 chromosomes in women: XX.
Pair 23 chromosomes in males: XY.
The likelihood of having a kid or a girl according to genetics
To start with, we should talk a little regarding gametogenesis, which is the
process in which sex cells are produced. That is, sperm in the case of men, and
eggs in females.

These sex cells, i.e. the egg as well as sperm cells, do not include 23 pairs
of chromosomes like the remainder of the cells in the body, however have 23
chromosomes each. Therefore, when a sperm cell fertilises an egg, they create a
zygote which will certainly have all 46 chromosomes, 23 from the mommy and also
23 from the father.

Eggs constantly have an X sex chromosome because, as explained above, females
have two X chromosomes. Sperm, nevertheless, can either have an X or a Y
chromosome. Therefore, if a sperm with an X chromosome fertilizes an egg, the
resulting zygote will certainly be female (XX). On the other hand, if the sperm
which fertilizes the egg has a Y chromosome, the zygote will certainly be male
(XY). Basically, genetically, the likelihood of having a child or a lady
depends on whether the sperm that fertilizes the egg is X or Y.

What aspects can affect this process?
Now that you recognize exactly how the sex of human beings is established, you
may be asking yourself if there are elements that influence whether the sperm
that reaches the egg is X or Y.


In cases of twin pregnancies, if there is a Y chromosome present, we can figure
out that at the very least one of the fetus is male, and if there is no Y
chromosome, we can assume that both foetuses are women.

Click to know more about BGI China and BGI gene test products if you are
interested.

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