Word: geneses
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The scientific debate over what causes homosexuality -- nature, nurture or a mixture of both -- just got even more complicated. Reflecting the complexity that is seeping into the field of genetics in general, a new study published in the journal Science failed to replicate the findings of widely publicized previous research...
Scientists have done remarkably well in tracking down genes that are linked to diseases, identifying more than 100 illnesses that are associated with single-gene defects, such as Tay-Sachs, sickle-cell anemia and several forms of cancer. In dealing with behavior, however, the results have been more ambiguous. "The...
"For the most part, genes were the real secret," Perls said. "This idea that longevity runs in families is really true. We think that genes play a crucial role."
But though genes are important, Perls and Silver stressed that lifestyle and personality can add to or subtract from a person's lifespan.
"The vast majority of us probably have the genes to allow us to get to the mid to late 80s in excellent health, but these days we have average life expectancy in our 70s," Perls said.