"A different way to look at is it's almost impossible for evolution not to happen." Still, the findings also are controversial, because it's far from clear what effect the genetic changes had or if they arose when Lahn's "molecular clock" suggests — at roughly the same time period as some cultural achievements, including written language and the development of cities.
Lahn and colleagues examined two genes, named microcephalin and ASPM, that are connected to brain size.
Some are single by necessity or life circumstances, others by choice or career aspirations.
And then there those who are functionally single but married to themselves.
In fact, the variations were so common they couldn't be accidental mutations but instead were probably due to natural selection, where genetic changes that are favorable to a species quickly gain a foothold and begin to spread, the researchers report.
Lahn offers an analogy: Medieval monks would copy manuscripts and each copy would inevitably contain errors — accidental mutations.
There's nothing worse than building a relationship with someone only to discover, it's not going anywhere.
Genesis ends with Israel in Egypt, ready for the coming of Moses and the Exodus.As one woman put it, marrying herself allowed her to see that all the love she needed was inside herself."I started discovering that the love I need, it's in here," Nadine Schweigert said, pointing to her heart. The narrative is punctuated by a series of covenants with God, successively narrowing in scope from all mankind (the covenant with Noah) to a special relationship with one people alone (Abraham and his descendants through Isaac and Jacob).The book's author or authors appear to have structured it around ten "toledot" sections (the "these are the generations of..." phrases), but modern commentators see it in terms of a "primeval history" (chapters 1–11) followed by the cycle of Patriarchal stories (chapters 12–50).