Does the gender of the baby depend on the genes of the parents?

The gender of the baby is not genetically determined, says a new study that looked at population data from Sweden since 1932. The fact that some parents only get boys, others only girls and still other couples raise representatives of both genders has nothing to do with the genes, as previously assumed by some.

Can the baby's gender be predicted?

Baby's gender - is it gene dependent or not

Under the leadership of Ralf Kuja-Halkola, a team from the Karolinska Institute in Solna examined the data of a total of 3.54 million people and their children. This was exclusively population data from Sweden. When evaluating the information, the researchers from Sweden, Australia and other countries found that there is no connection between the genes of the parents and the gender of the baby. Similarly, the gender of the first child has nothing to do with that of the children who follow.

Evaluations of a study on the gender of the baby - the genes of the parents play a role

The researchers thus contradicted the widespread assumption that the parental genes have an influence on the sex of their offspring. Previous studies said that wealthier couples tend to give birth to boys more while attractive people get girls. However, according to the latest results from Kuja-Halkola and his team, these studies are also incorrect. Only the fact was confirmed that more boys than girls are born worldwide.

Genetic gender dependent on chromosomes

The sexes of the children arise at random, depending on which chromosome is inherited from the father

So you cannot determine or influence the baby's gender in advance. Ultimately, it is a question of the chromosomes and, more precisely, whether the child is given an X (for girls) or a Y chromosome (for boys) by the father – and that, in turn, works at random. According to research results, anyone who previously believed that the child's gender could be determined in advance before the genital organs of the fetus had developed in the mother's belly was wrong.

The parents' genes do not affect whether a child becomes a boy or a girl

The study on the sex of the baby was published in the journal “Proceedings B” of the British Royal Society and can be found here.

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