The research organized in the University of Florida by biologists. To explain the significance of each finger ability in men and woman.
The importance of fingers helps doctors to understand the behavior and diseases. It is Useful for treatments, predicting risks with specific medical conditions. Biologists Martin Cohn, Ph.D., and Zhengui Zheng, Ph.D., department of molecular genetics and microbiology at the UF College of Medicine, justify the balance of sex hormones during early embryonic development are determined by male and female digit proportions.
Finger bones differ in levels of sensitivity to Androgen and Estrogen
Male and female receptors activate during difference in level of these hormones which affects growth of specific digits. The discovery provides a genetic explanation that link finger proportions with features ranging from sperm counts, aggression, sexual orientation, musical ability and sports prowess, to health problems such as autism, depression, heart attack and breast cancer. The digit ratio influenced by sex hormones, but experimental evidence still inadequate.
The hormonal signals control the rate at which skeletal antecedent cells divide, and showed that different finger bones differ in levels of sensitivity to androgen and estrogen. From Roman times, people have associated the hand’s fourth digit with the wearing of rings. Different cultures around the world longer ring finger in men taken as a sign of fertility.
Biologists found Parental development of limb in mouse embryos packed with receptors for sex hormones. The scientists controlled the signaling effects of androgen also known as testosterone and estrogen. More estrogen resulted in a feminized appearance.
The developing growth digits controlled directly by androgen and estrogen receptor activity. In addition more differences between the sexes. That our fingers can tell us about the signals exposed to a short period of our time in the womb.
Provided 19 genes sensitive to prenatal testosterone and prenatal estrogen. There is growing evidence that a number of adult diseases have fetal origins.