In london, peppered moths that were light colored blended in with trees of the area, and were well populated. over time, pollution caused the bark of the trees to darken, causing a shift in the number of light colored moths seen. the darker colored moths survived the predators since they were able to blend in with the darkened tree bark, and they reproduced rapidly.

this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.

the correct answer is sex-linked recessive.

i just took the test

when it is at an intermediate population density

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.