Which one of the following conditions would most likely cause allele frequencies of a gene pool to change by chance (hint: by imperfect sampling or sampling error!!!)?  

  Natural selection changes allele frequencies because some __________ survive and reproduce (!) more successfully than others.

Current liabilities are due

  Currently, two of the living elephant species (X and Y) are placed in the genus Loxodonta, and a third surviving species (Z) is placed in the genus Elephas.    Assuming this classification reflects evolutionary relatedness, which of the following is the most accurate evolutionary tree?    

  The following graph shows the size of a plant population in a forest. The population was recently affected by a wildfire, as indicated in the graph. Which of the following statements is most likely true about the plant population immediately after the wildfire?

  Period of evolutionary change in which groups of organisms form many new species whose adaptations allow them to fill different ecological roles in their communities.   

  BONUS #3:    Which of the following statements is accurate with regard to a phylogeny, as represented by a phylogenetic tree?  

Put the following terms in the correct sequence of levels according to the biological hierarchy.    NOTE:  BIOSPHERE is at the top and ATOM placed at the bottom!!!!  

Which enzyme initiates the unwinding of the DNA double helix by breaking hydrogen bonds between complementary base pairs during replication?

Explain the role of the respiratory system in maintaining homeostasis.