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Repurposed genes responsible for unique fins of skates and rays, study finds

The evolution of the striking, wing-like pectoral fins of skates and rays relied on repurposed genes, according to new research by scientists from the University of Chicago. Studying embryonic skates, they discovered that the rear portion of the fin is built by typical limb-development genes; but the front portion develops through a different set of genes that are usually found in the shoulder areas of other species. (more…)

Shiller Paper Cited As One of the Century’s Top Economic Articles

By Guest PostFebruary 17, 2011Economy100 year history, aer, american economic review, article, b douglas bernheim, behavioral finance paper, book, changes in stock market prices, daniel l mcfadden, dividends, dot com bubble, efficient markets hypothesis, focal point, irrational exuberance, james m poterba, kenneth j arrow, martin s feldstein, modern era, professor of economics, rational expectations, robert j shiller, robert m solow, shiller index, shiller paper, stephen a ross, stock market, stock prices, top 20 articles, yale professor

An article written by Robert J. Shiller, the Arthur M. Okun Professor of Economics, was recently named one of the “top 20” articles in the 100-year history of the American Economic Review (AER), the premier journal in the field of economics.

“Do Stock Prices Move Too Much to Be Justified by Subsequent Changes in Dividends?” was published in the June 1981 edition of the AER and became a focal point of debate and research over the question of whether changes in stock market prices are driven by rational expectations — what’s called the efficient markets hypothesis — or by other forces. (more…)

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Repurposed genes responsible for unique fins of skates and rays, study finds

Shiller Paper Cited As One of the Century’s Top Economic Articles