We model the evolution of a quantitative trait under selection that fluctuates in space and time, and derive an analytical condition for when these fluctuations promote genetic diversification.
It's a commodity that fluctuates in value.
The single-teacher school has an enrollment that fluctuates from 14-16 pupils.
The result is that they become fat, or have a weight that fluctuates up and down.
He has made a body of work that fluctuates hugely, from astonishing gems to experiments best forgotten.
How do Nobel laureates spend their winnings – a sum that fluctuates with the investment value of Alfred Nobel's capital, but is currently worth 8m Swedish kronor (£720,000)?
Tens of thousands of people use The Apprentice Predictor with a real-time graph that fluctuates as people register who they think is most likely to win.
Abeid is a theatrical speaker, with an impassioned voice that fluctuates wildly, and a habit of preacher-like pauses between phrases.
On the golf course, the president grins and bears the indignity of being out-hit by Mr. Betts, proud holder of a handicap that fluctuates between two and three.
They wanted to buy a yellow clapboard Colonial Revival-style house on a quiet street in Chappaqua, N.Y., but since they both have jobs in sales, with income that fluctuates, they did not know what kind of mortgage to pick.
Like airlines, restaurants are in "a very cyclical business," with mostly fixed costs measured against revenue that fluctuates by hour, day and season, said Chuck Templeton, the chairman and founder of OpenTable Inc., an Internet-based reservations site (www.opentable.com).com
