Give an example of two groups of closely related organisms that have developed divergent traits ...

Give an example of two groups of closely related organisms that have developed divergent traits because nat-ural selection has worked differently on them,
 
  and then contrast this with two groups of organisms that share one or more similarities because they are ex-posed to similar selective conditions. Explain the selective forces that have worked on these groups of organ-isms in both examples, and use the scientific term given to each set of conditions. Try to use examples other than those presented in your text.
 
  What will be an ideal response?