Most people, despite their religious affiliation or lack thereof, know the general idea of the story of Adam and Eve from Christianity, they are said to be the first man and woman created by god, well geneticists use these popular terms for labeling the first X and Y chromosome of the human species when using genetic analysis to date them. Recently a new study by Eran Elhaik from the University of Sheffield was published in the European Journal of Human Genetics giving a new approximation of the “Y-chromosome Adam”. The new date for when the first male with the Adam chromosome lived is 208,000 years ago, only 8000 years prior to when Homo sapiens are estimated to have risen, via fossil data.
About a year ago a study was released that placed “Adam” to have been living approximately 33800 years ago, right around the same time frame that Neanderthals are genetically sequenced, via fossil records, to have appeared. Elhaik noticed how this study implied that the Y-chromosome would have to predate all anatomical modern humans, meaning there was a abundant amount of interbreeding between the variations of human species living at the same time, rather than the odd accounts that had been speculated. Yet, there is very little fossil record in behalf of this old study, Elhaik deemed this to be the result of poor data analysis and stated that the study was disastrous since it placed the oldest member of Homo sapiens prior to when the species had come to be: he referred to this poor study as folly due to a “space-time paradox”, which prompted him to repeat the study himself.
A person is composed of their parents’ chromosomes, an XY from the father and an XX from the mother; the Y chromosome is attributed to male characteristics and other sex dependent connotations, it is, normally, only given to males this is the reasoning for receiving the male character’s name from the biblical story. Meanwhile the X-chromosome, which can be given by both parents, is called the mitochondrial genome for one of the X-chromosomes from the mother is always given to the offspring, so the name the common ancestor of the X-chromosome to Homo sapiens is given is the “mitochondrial Eve”, falling in suit with the biblical story line. “Mitochondrial Eve” is actually supported by the fossil record and placed at a very similar time frame to the “Adam chromosome”, she is a at a fairly definite 208,300 years ago.
So although it does seem that the “Adam” and “Eve” of our species did appear around the same time frame, based on genetic analysis of the fossil records, it also seems they were a bit older than the creation date given by Christianity… which is about 14,800 years too young actually and the land was more than likely no garden of Eden.
Nicole Peterkin (3)