These butterflies are extremely choosey about finding mates with their own, species-specific wing pattern.
BBC: NEWS | Science/Nature | Two species become one in the lab
Those who do marry tend to choose mates with similar education levels, concentrating the disadvantage.
MSN: NYT: 'Alarming' drop in life span for some whites - US news - The New York Times | NBC News
However, Randy Thornhill of the University of New Mexico has gone further in his analysis of who mates with whom, and why.
But the game soon descended into an ugly medley of high balls and heavy touches, with Nigel Reo-Coker wasting some decent counter-attacking work from his team-mates with a loose final ball.
Once Tendulkar had departed with the total on 108, Vaas and his team-mates met with little resistance.
The increase was due primarily to the fact that grown pups who would normally leave the pack to seek mates remained with their family unit during severe winters.
Boosting genetic diversity means more and more breeding with mates drawn from other countries, with parents selected to ensure that potential pups will be born without genetic faults, like bad hips or eyes.
Another nice thing about pinball machines: You don't need office mates to play with you.
The court heard that Mexico-born Miss Miron-Buchacra had allegedly tried to stop her fiance, of Bennett Street, from going out with friends and work mates and had accused him of not spending enough time with his family.
Now if there is something for her to do, she'll be happy to come along with her mates.
Into the Blue shows a creative musician who knows himself, working with band mates who truly understand each other.
In France, just one in six spent most evenings out with their mates.
The writer-director, Sandra Nettelbeck, gives Martha two potential mates, an architect with two kids and an outgoing Italian chef named Mario.
Six months with office mates of his choosing and the belief that he's doing something good by helping people develop business ideas.
It's all about giving the horses what they need, the 39-year-old says, whether it's splashing around in the waves or pottering around in paddocks with their mates.
Together, along with band mates Dave Sitek and Jaleel Bunton, they have created a unique sound that transcends genre classification and has elicited critical acclaim album after album -- most recently for their latest project, "Nine Types of Light, " which came out this year.
Also receiving a warm welcome was guitarist Mick Taylor, who reunited with his former band mates for "Midnight Rambler, " a song he regularly performed during his tenure with the Stones from 1969 to 1974.
Tuqiri, who will start training with his new team-mates this week, is expected to return to play rugby league in Australia with Wests Tigers in 2010 when his Leicester deal ends.
In addition to playing for Irish on Sunday, Perry will team up with his former team-mates Carl Hayman, Brendan Daniel and Spencer Davey after the match to perform with their band 'Tower Phoenix' at the Madejski Stadium.
France international Gallas, who won two Premier League titles and a League Cup winner's medal with Chelsea before moving to Arsenal, first trained with his new team-mates on Monday after agreeing terms on Saturday on a one-year deal with an option to extend.
The cricketer had been in Christchurch with team-mates after playing for Wellington Firebirds in a domestic one-day competition.
McIlroy was out in a three-ball with team-mates Llewellyn Matthews and Jamie Moul in Tuesday morning's practice at RCD.
He took a taxi to Nottingham city centre where he continued to drink with his team mates until 02:00 GMT.
BBC: Rugby player Mitchell Todd over drink limit, inquest hears
Though he originally wrote the song as a waltzy "dirge, " he ended up shifting the mood after discussing it with his band mates.
The four were questioned, along with team-mates Lee Byrne and Mike Phillips, by team managers about what they were doing in Cardiff city centre on Sunday.
Under-soil heating made the pitch playable, and despite the tricky conditions O'Neil believes he and his team-mates came through the game with some credit despite defeat.
"When you see one of your team-mates, who you train with, go out there and achieve it makes you think 'maybe I can do this as well', " she said.
In my day, the classic bored teenager hung around the bus-stop with a few mates and someone produced a packet of 10 and a bottle of cider.
If there are any areas that England should reconsider, one would be the unnecessary way in which team-mates seem to fall out with each other on the field with everyone trying to be perfect.
Douala had pace to burn and should have done better when he got behind the Wigan defence but with team-mates pleading for a cross, his shot from a narrow angle was easily handled by Kirkland.
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