“collected placenta from 147 women around the world and, studying the mitochondrial DNA, they determined that the first Homo sapiens appeared in Africa 200,000 years ago. The mitochondria are small bodies outside of the nucleus of animal cells. Their function is to produce energy for the cell. The DNA within the nucleus is equally from the male and the female of the species. However in the mitochondria, the much simpler DNA is contributed almost exclusively by the female. Thus, in the report, the researchers referred to the first human as Eve. Some people take exception to that finding. They believe humans did appear in Africa but they appeared only about 5,000 years ago according to the Bible. They maintain that the scientists made a mistake in determining the rate of mutation of the mitochondrial DNA that led them to calculate the 200,000 year time frame. However, in 2003 another team of scientists from the University of California at Berkeley published an article in the Journal of Nature in which they reported Homo sapiens’ skull was found in Ethiopia and had been dated to be 160,000 years old.”