1B. Table (6 pts) Phenotype Genotype Observed Number Observed Frequency (%) Expected Frequency (%) Brown Body BB 3500 [Observed1] [Expected1] Brown Body Bb 4500 [Observed2] [Expected2] Black Body   bb 2000 [Observed3] [Expected3] Total 10,000 100% 100% *Write your answers as a percent%

Researchers move a set of salamanders to a larger island with shrubs. They intentionally choose salamanders with three body sizes to move: small, medium, and large.  They wanted to understand the strength of natural selection acting on body size. Use the table below to calculate the selection coefficient for the large phenotype. Phenotype: Large Medium Small Chance of survival to mating: 25% 50% 10% Number of offspring if survive: 10 20 10 Fitness (average for an individual with that phenotype): 0.25 x 10 = 2.5 0.5 x 20 =10 0.1 x 10 = 1 Relative fitness: ? ? ? Selection coefficient: ? ? ?

Week 12: Evolution of Animal Behavior: Altruism & Sexual Selection-SHORT ANSWER (12 PTS)

SA4. (12 pts) Match the following cell parts on the left with the statements on the right.

The next three questions reference the following scenario.  The scenario will be repeated for your reference and the unique question will be at the bottom of the scenario. Researchers placed a population of 160 tree-climbing salamanders on an island that had no trees. They measured the length of the individuals in the initial population (top graph). Twenty years later, the researchers returned to the island. They measured the length of the salamanders they found on the island (bottom graph). They saw the pattern in body size below: Question: Can researchers be sure the population evolved?

Week 6: Gene Expression

SA2c.   Evolution is the same as ‘survival of the fittest’.

 A wristwatch suddenly stops working. After replacing the battery, the watch starts working again. Which of the following statements correctly describes the situation from the perspective of the scientific method?

Animal cells have diverse types of cytoskeleton including all of the following EXCEPT

You’ve transformed Agrobacterium tumefaciens with a modified Ti plasmid.  Within the T-DNA boundaries, the plasmid carries no gall-inducing genes but DOES contain a general plant promoter upstream of a gene of interest that you’d like to transfer to the plant.  What would you expect to happen if these engineered Agrobacteria were placed on a plant at the site of a wound?