Why is male higher than female?

According to a recent study by the University of Helsinki (Finland), the difference between the height of men and women has a close relationship with the X chromosome in the human genome.

In the sex chromosome pair, in women, the X chromosome exists in pairs (XX) while in men, the X chromosome has only one. Often, X chromosomes are often forgotten in large-scale genetic studies. But, recently in Northern Europe, the University of Helsinki (Finland), along with a number of other scientists around the world, have conducted research and carefully analyzed variations on chromosome X over 25,000 people with Various health and pathological information.

The aim of this study is to find genetic factors that can explain basic differences such as: BIM, height, blood pressure and lipid levels in the blood. And the result is that scientists have discovered hundreds of genetic variations that affect those characteristics. More specifically, these genetic variations often occur on the X chromosome.

The study showed that a gene variant near the ITM2A region , which plays an important role in cartilage development , is frequently found in people of less than average height. This gene variant was found in one-third of all volunteers in Europe, and showed that the more genetic variants were expressed, the lower the height. Interestingly, the expression of this gene variant is strongly expressed in women.

Professor Samuli Ripatti, one of the leaders of the study, revealed: ' The X chromosome pair in women may be the cause of lower than men in the development process.'

Dr. Taru Tukiainen, one of the scientists involved in the study, said in the PloS Genetics Science Journal: 'Studying the X chromosome is a challenge for us. But we firmly believe that this study will arouse a deeper understanding of biology '.