Explain the theory of evolution as Darwin proposed it. Use the fact that many bacterial strains are now resistant to antibiotics as an example to support Darwin's theory.
Construct an experiment using bacteria that would demonstrate the idea of "survival of
the fittest"

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?