But another sequence, the gene's so-called unidentified domain (UD), appears to have changed extremely rapidly in humans--about seven times faster than it did in other mammals--and shows signs of being positively selected for in evolution.
But the Obama connection, he said, "has changed my life, and I'm extremely grateful".
Though I do wonder if suddenly becoming one half of an extremely famous couple has changed things.
"What has changed," she told me, "is my sense of how extremely complex, how extremely textured, any particular case is".
"My behaviour has changed by now, of course, but I used to be an extremely aggressive kid".
"My behavior has changed by now, of course, but I used to be an extremely aggressive kid".
That's an extremely important question, because over time U.S. policy with respect to this issue has changed.
By the mid-1990s, clinicians were aware that the landscape had changed considerably for extremely preterm infants, but wide variation in survival rates between single centres and a lack of standardized developmental follow-up meant that it was difficult to gauge the impact of extremely preterm birth on a national level and to counsel parents as to the likely outcomes for their child.
"These extremely successful retailers have changed the tapestry of retailing in the U.S.," Mr. Rubenstein, the spokesman, said.
But a slightly different question indicates views have changed: 29 percent said it was extremely important for the government to increase equality of opportunity.
