Some researchers think that the genetics for these families sometimes might be different.
Some are hard-wired by genetics and early-life experience to react more fearfully to challenges.
Some buy Polish innovations (in genetics, for instance) for a song, others are happy to wait until patents expire, then grab the technology.
This experiment does, however, suggest that genetics alone may explain some cases of SIDS. In the past, explanations have concentrated on environmental factors such as the smoking habits of the parents, bacterial infection and (most famously) a baby's sleeping position.
Or some underlying issue, partly explained by genetics and early childhood experiences, could be a precursor to both poor sleep and the mental disorders.
WSJ: How Much Sleep Do Children and Teenagers Need? Grown-Up Problems Start at Bedtime
"The market is saying Myriad Genetics is going to go into some type of decline, which I think is unlikely, " says Stephens analyst Scott Gleason.
What we were interested in doing back in those early days of human molecular genetics was just trying to find out some basic information about inherited variation in our DNA. And it was purely by accident in those studies that we generated, totally out of the blue, what proved to be the very first DNA fingerprint.
Perhaps some tumors occur when disease or environmental exposure disregulates the genetics of cells and alters their identity.
Some 20% of people don't shrink noticeably thanks to a combination of genetics and following healthy habits throughout their lives, experts say.
This period of conflict may last for decades, particularly if the new paradigm comes, not from some of the existing leaders of the current scientific establishment but rather from some unexpected and peripheral source, e.g. the dramatically different theory of genetics coming from Gregor Mendel in Moravia or a revolutionary theory of stomach ulcers from Barry Marshall in Perth, Australia.
Some had a form of Alzheimer's disease that was known to be due to conventional genetics.
Some of the world's largest coffee companies are pursuing proprietary research projects to expand coffee's genetics.
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