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It's often meaningless to talk about a genetic trait without also discussing the environment in whi
It's often meaningless to talk about a genetic trait without also discussing the environment in whi
It's often meaningless to talk about a genetic trait without also discussing the environment in whi
It's often meaningless to talk about a genetic trait without also discussing the environment in whi
It's often meaningless to talk about a genetic trait without also discussing the environment in whi
It's often meaningless to talk about a genetic trait without also discussing the environment in whi
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Sam Kean:
We know that genes shape human cultures and human societies: The DNA we inherited from our ancestorSam Kean:
Except for certain moments - when cells are dividing, for instance - chromosomes don't form compactSam Kean:
Junk DNA - or, as scientists call it nowadays, noncoding DNA - remains a mystery: No one knows howSam Kean:
Mutations can arise anywhere in the genome, in gene DNA and noncoding DNA alike. But mutations to gSam Kean:
The grand saga of how humans spread across the globe will need some amendments and annotations - reSam Kean:
Geneticists in the early 1900s believed that nature - in an effort to avoid wasting precious spaceSam Kean:
Before the Human Genome Project, most scientists assumed, based on our complex brains and behaviorsSam Kean:
Most mutations involve typos: Something bumps a cell's elbow as it's copying DNA, and the wrong letSam Kean:
All human beings are, in fact, born with dozens of mutations their parents lacked, and a few of thoSam Kean:
Whereas recessive traits require two bad copies of a gene to become noticeable, a dominant trait ex