Science: Genes Hide More Sexes Differences

Society | March 18, 2005, Friday // 00:00

Gene scientists have cracked the genetic code of the female X chromosome that might help explain biological differences between the sexes.

According to a scientific study published in Thursday's issue of the journal Nature, the analysis of the "X" chromosome - the female sex chromosome - has revealed that women are far more variable than previously thought and, when it comes to genes, more complex than men.

The findings reveal that men have taken a genetic battering that has dwindled the size of their own "Y" chromosome.

The discovery shows that, when the X chromosome occurs in women, it behaves so differently to when it resides in men that it has in effect resulted in the evolution of another human genome.

When the study compared the inactivated X chromosomes of 40 women each of them showed a different pattern of gene activity.

In other words, the physical and emotional differences between men and women may run deeper than those, which are caused simply by hormones.

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