HerefordSire
Well-known member
Any comments on these points?
....consider the reality that modern science can now fertilize the egg from a female with an egg from another female, and thereafter yield a daughter -- all without benefit of sperm, males, or ....
...based on mutation rates of mitochondrial DNA, there existed the possibility that 180,000 to 360,000 years ago, a solitary woman could have become the mitochondrial mother of every living being.
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The mtDNA is inherited only maternally, from the mother. It is thus passed intact from great-grandmother to grandmother to mother to daughter with virtually no input from males and thus no mixing, no blending of father's and mother's genes....
When the nuclear DNA in a male's sperm unites with the DNA in the egg of a woman, there is a mixing together of genes like marbles in a tumbler.....Characteristics from both parents are manifest in the baby, a unique human being with a mixture of the parent's genes. But when sperm enters the ovum, only nuclear DNA is believed to enter the egg. So when a baby's cells form and are duplicated, they contain nuclei possessing the genes of both the mother and father, but with the mitochondria containing the genes only of the female parent. It has been that way since the beginning of woman. And with no tumbling of the mitochondria marbles, mutation is basically the only kind of change that can occur in the mtDNA.
http://halexandria.org/dward725.htm
