You have digested a piece of DNA with the restriction enzyme EcoR1 and obtained 2 fragments, one 300bp and the other 600bp. After running the fragments on a gel electrophoresis, you would expect the 300bp fragment

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos

The data below simulate what happened to peppered moths in england after the industrial revolution which statement best describes the process that produced one of the emding populations of moths ?light colored moths were selected for on light colored trees