Archive for University California Berkeley

A Frog’s Evolutionary Tale

Posted in Science with tags , , , , , , , , , on August 10, 2010 by neandergal

Geologists are able to tell the timeline and sequence of tectonic plate movement by studying the genetics of a variety of 24 species of the Paini frog in Asia. Genetic analyses of the frogs allow scientists to determine their evolutionary trail along the Himalayas and Tibetan Plateau.

Formation of mountain ranges caused by movement of the Indian tectonic plate and climate change isolated populations of frogs. The different environments caused by geological changes led to different evolutionary changes in the frogs. From the genetic studies of the different frogs, it appears that the beginning of the mountain ranges of the Himalayas started in the Oligocene period some 34-23m years ago. Species divergences occurred in the Miocene period 5-23m years ago.

Scientists at University California Berkeley and Kunming in China analyzed the species of spiny frog that evolved muscular limbs to hold on tight to their mates in an amphibian grip known as the “Amplexus” (Latin for embrace) and rocks in the fast flowing rivers of their high altitude environment.

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