A Quote by Jeffrey Kluger
Identical twins are ideal lab specimens for studying the difference between learned and inherited traits since they come from the womb preloaded with matching genetic operating systems. Any meaningful differences in their behaviors or personalities are thus likely to have been acquired, not innate.
Related Quotes
Traits acquired during one's lifetime - muscles built up in the gym, for example - cannot be passed on to the next generation. Now with technology, as it happens, we might indeed be able to transfer some of our acquired traits on to our selected offspring by genetic engineering.
Nonetheless, much has been learned by studying the statistical differences between the various human races.
According to a recent study of the brains of identical and fraternal twins, differences in the amount of gray matter in the frontal lobes are not only genetically influenced but are significantly correlated with differences in intelligence.
Everyone recognises that genes are part of the story but autism isn't 100% genetic. Even if you have identical twins who share all their genes, you can find that one has autism and one doesn't. That means that there must be some non-genetic factors.
Anybody who objects to cloning on principle has to answer to all the identical twins in the world who might be insulted by the thought that there is something offensive about their very existence. Clones are simply identical twins.
True twins share womb chemistry and endure many fateful slings and arrows together. The fabled connection between twins is true in my case.
Sufficient unto the day is one baby. As long as you are in your right mind don't you ever pray for twins. Twins amount to a permanent riot; and there ain't any real difference between triplets and a insurrection. - The Babies speech 1879
In some domains it looks as though our identical twins reared apart are...just as similar as identical twins reared together. Now that's an amazing finding and I can assure you none of us would have expected that degree of similarity.
Look at identical twins. When you get closer, you start to see the small differences. It all depends on how much you magnify it.
Since the 1940s, we've been saying there are no differences, we [humans] are all identical. We're going to know at year end if that is true.
If you look across a host of measures at adoption studies, fraternal v. identical twin studies, twins-raised-apart studies, the history of early childhood intervention research, naturally-occurring experiments, differences between societies, changes over history, and so forth, you tend to come up with nature and nurture as being about equally important: maybe fifty-fifty. The glass is roughly half-full and half-empty.
This seems highly likely, especially as it has been shown that in several systems mutations affecting the same amino acid are extremely near together on the genetic map.
Plato and his objectivistic successors ... preserved the awareness of differences that pragmatism has been invented to deny the difference between thinking in the laboratory and in philosophy, and consequently the difference between the destination of mankind and its present course.
All animals exhibit innate behaviors in response to specific sensory stimuli that are likely to result from the activation of developmentally programmed circuits.
All the work on heritability was never based on looking at genes; it was based on the similarity between identical twins or between parents and children. Now that geneticists can look at genes, they can't find genes that account for more than 10 percent of the variation in any human trait.
I've come to learn that there is a real difference between men and women. It's genetic.
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