Editor’s Selections: Compensating for alien genes, natural selection, and freshwater aquaria as vectors
May 14th, 2010 Editor's Selections No Comments
Vincent Racaniello selects several notable posts each week from molecular and cellular biology and virology. He blogs at virology blog.
- Resistance to bacterial antibiotics encoded on plasmids or the chromosome initially results in loss of fitness. But the cost may often be ameliorated without the loss of resistance.
- The best-known of the Big Four forces of evolution is almost certainly natural selection. It is a relationship between fitness, the number of offspring an organism can produce, and phenotype, the value of one or more traits of that organism.
- One of the pleasant surprises of a freshwater aquarium is the invertebrate organisms like snails and worms that show up and call your tank home. Unfortunately, the introduction of exotic invertebrates could pose a problem for natural freshwater systems.
I’ll be back next Friday with more selections.
