We all have studied the phenomena of microevolution in our school. Now, a team of Australian scientists has come up with evidence of microevolution in humans. They have seen clear differences between the generations of human beings. Experts have claimed in their study that humans are undergoing microevolution as more recently babies are born without a wisdom tooth and with an additional artery in their arm. They have said that humans are evolving rapidly now as compared to any point of time in the last 250 years. They have said that infants are born with shorter faces, jaws, and extra bones in their legs and feet. These striking findings have been published in the Journal of Anatomy.
Experts have said that an extra artery is a middle artery, which is developed in the womb and works as the main vessel, which provides blood to the forearm and hand. This artery disappears after ulnar and radial arteries are formed; however, one out of three people has this artery throughout life. Experts have claimed that there is no health risk linked to this artery, it offers increased blood supply to the hand. The author of the study Dr. Maciej Henneberg has said that this can be seen as macroevolution in modern humans. He has said that people who are born more recently have this extra artery compared to previous generations of humans. Experts have said that people who will be born after 80 years from now will have the prevalence of this median artery if this trend continues.
The authors of the study have said that the shorter face and jaws mean that there will be less space for teeth, it very well explains the absence of wisdom tooth in people born more recently. The study says that the absence of a wisdom tooth will increase the ability to chew food. Experts have observed the retainment of certain body parts and examined the corpse of deceased people born in the 20th century. Many people have thought that humans have stopped evolving, however, the new findings of the study show that the evolution is still going on.