Certain fruit flies fail to develop eyes, a defect that has been traced to mutations in either of two genes.
The more choices you make throughout the day, the harder each one becomes for your brain, and eventually it looks for shortcuts, usually in either of two very different ways.
As she reports in the Journal of Animal Ecology, she attempted to imitate the distinction between trees and ground by giving eight possums the opportunity to feed in either of two enclosures.
Minnesota's last official Big Ten title in either of the two major sports was in 1982.
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But there has been no evidence in either of the two reports to substantiate such an allegation.
As part of their investigation, Japanese and U.S. experts want to determine if an internal battery failure, or defective lithium-ion cell, was the ignition source in either of the two incidents.
Flacco, meanwhile, has failed to crack the top ten in completion percentage, yards or touchdowns in either of the last two seasons, and he barely made the cut in 2010.
That's more than the total for all defaults in either of the last two years.
No such decisive moment has occurred in either of the first two debates.
More of the women with moxibustion had babies born the right way round, head down, than in either of the other two groups.
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New York defenseman Marc Staal, who came back from a serious eye injury in Game 3, hasn't played in either of the past two games and isn't expected back Sunday. either.
Lee was the most impressive Australian bowler against the Lions, and in the 32-year-old pace bowler's absence his team-mates were unable to take 20 wickets in either of the first two Tests.
Most responses (79%) fell either in that 10K to 100K band or in the two bands on either side of that band, which seems reasonable.
In cafes and houses either side of two countries' border, tens of millions will tune in for the stand-out tie of the Asian Cup so far.
The tobacco companies, once among the mightiest lobbyists in Washington, seem to have few friends left in either of America's two main political parties.
The Romanian joined the Spanish outfit for their F1 debut in 2010, but has seen the team fail to register a point in the either of the last two seasons.
In fact, he did not mention either of his two key fiscal targets in his speech.
He says the choice facing the Ministry of Defence is stark, and will reshape the UK's Armed Forces in one of two ways: either producing balanced Armed Forces able to undertake a broad range of tasks and commitments, as in the past, or forces which specialise, but lose their broader capabilities.
No restriction on the number of players who can participate in the lineout from either side (minimum of two).
The facts are staggering about ex-players: 78 percent of National Football League players are either bankrupt or in financial trouble within two years of retiring, according to Sports Illustrated.
We believe that moving quickly to negotiate and conclude our proposed merger is in the best interests of Take-Two and EA. Waiting for a later date leaves open significant uncertainty regarding the timing, the probability and the value of a potential transaction, and is not in the best interests of either company or Take-Two's stockholders.
Since three-quarters of parents are either unmarried or in families with two earners or none, it would not help most of them.
The chance of a peaceful settlement in either Rwanda or Burundi, the two micro-states at the heart of the region, is small.
Moving it a little to the right splits the beech hedge in two on either side of a bubble.
According to the researchers, 20 percent of those taking either high dosages or several of the drugs at once died in a two-year period, an alarmingly high fatality rate.
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But we have no intention to compete with either of the other two organizations in what they do best.
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But it had great trouble persuading either of the other two parties in the Assembly to join it in government.
The launch of the two regional sports networks sits against the backdrop of either new RSNs in the Southern California area cropping up, or lucrative rights extensions for the sports teams that are inking them.
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After the turgid fare of the previous two weeks it was a surprisingly open game, despite the wet conditions, but tries were at a premium and two Carter penalties, either side of a second Wilkinson kick, ensured the two sides went in level at the break.
Doherty started the season as club captain under previous manager Bryan Gunn but Lambert has not picked the centre-back for either of his first two league games in charge, handing the armband to Grant Holt.
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