NOTE: IF YOU HAVEN’T SHOWN BOTH SIDES OF YOUR SCRATCH PAPERS…

NOTE: IF YOU HAVEN’T SHOWN BOTH SIDES OF YOUR SCRATCH PAPERS TO THE CAMERA PLEASE DO IT NOW. For questions with:  “Select the right answer and show your work on your scratch paper for full credit.” Calculations must be present in your scratch paper, the question number must be indicated, and both scratch papers used during the exam must be uploaded in Part 2.

You are researching a tree lizard population in Arizona and…

You are researching a tree lizard population in Arizona and have found that the lizards’ leg length is controlled by a single gene, in which the dominant S1 allele and the recessive S2 allele code for short or long hind legs, respectively. The table below shows the current and expected future genotype frequencies in this population:   Tree Lizards in Arizona Genotype Current frequencies Expected future frequencies S1S1 0.705 0.690 S1S2 0.225 0.215 S2S2 0.070 0.095 Based on these numbers, which phenotype of tree lizards will be favored by natural selection if the environment doesn’t change in future generations?