A research was conducted on how gender in mammals and humans is determined. Based on the findings of this study, it is believed that an ancient virus determines the gender.
In a recent study led by Yale University, researchers discovered that a particular modification can disable a virus to influence chromosome activity in the early embryo.
he scientists found there’s a mechanism that switches the virus off on the X chromosome–where an organism’s sex is determined.
According to a summary of the findings, “If the level of this molecular marker is normal, X chromosomes remain active, and females and males will be born at an equal ratio. If this marker is overrepresented, X chromosomes will be silenced, and males will be born twice as often as females.”
Andrew Xiao, senior author of the study, noted, “Basically, these viruses appear to allow the mammalian genome to continuously evolve, but they can also bring instability…
Aside from the embryo, the only other places people have found this virus active is in tumors and neurons.”
(GeobetsNews,, Yournewswire.com, Dailymail.co.uk)