Tags » Experimental Evolution

The case of accidental evolution in HeLa

How does one accidentally evolve a population of cells? Quite easily it seems. 

This story begins in 1951, when Henrietta Lacks went to see her doctor at Johns Hopkins Hospital. 1,229 more words

Evolution

The life of a pea aphid, and why you don’t want to be him

Aphids live pretty simple lives, suck up some plant juices, find a mate, and make some babies…sounds quite chilled, right? Wrong. In fact, the life of a pea aphid or… 1,476 more words

Evolution

Biologists Awarded Grant to Study, Teach Mutualism Between Species

Three Syracuse University biologists have received a $710,000, three-year grant from the National Science Foundation. Led by Associate Professor Kari Segraves, the researchers will investigate mutualistic species. 38 more words

Science

Optimizing the product of the wow factor and the beneficial mutation supply rate

This post follows up on my post from yesterday, which was about choosing a dilution factor in a microbial evolution experiment that avoids the loss of too many beneficial mutations during the transfer bottleneck. 274 more words

Science

If

Every day, we propagate the E. coli populations in the long-term evolution experiment (LTEE) by transferring 0.1 ml of the previous day’s culture into 9.9 ml of fresh medium. 1,436 more words

Science

Cue-Based Hedging

Usually a contrast is made between bet hedging and adaptive plasticity. What makes adaptive plasticity different from hedging is that organisms respond adaptively to environmental cues. 807 more words

Experimental Evolution

Asking for a Skeptic Friend

I sometimes get email from people asking, in one way or another, whether our long-term evolution experiment (LTEE) with E. coli provides evidence of evolution writ large – new species, new information, or something of that sort. 421 more words

Science