10. Which of the following statements is correct? A. The finches are experiencing disruptive selection, with both larger and smaller beaks being favored at different times.
B. The finches are experiencing stabilizing selection toward an average-sized beak that can accommodate both larger and smaller seeds.
C. The finches are experiencing directional selection toward larger beaks.
D. The strength and direction of natural selection on beak size fluctuates depending on the prevailing environmental conditions.
E. The inconsistency in average beak size from year to year indicates that evolution is not occurring in the finches.

11. Pick one of the incorrect statements in Number 10 and explain why it is incorrect.

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Imagine you are a student in alfred hershey and martha chase's lab in the late 1940's. you are given five test tubes with the e. coli bacteria that were infected with t2 bacteriophage that have been labeled with 32p or 35s. unfortunately, you forgot to label the tubes and are now uncertain which were 32p labeled and which were 35s labeled. you place the contents of each tube in a blender and pulse it for a few seconds to shear off the protein coats from the bacterial outer membranes. you then centrifuge the contents to seperate the protein coats and the bacterial cells. you then check for radioactivity and obtain the results shown below. which tubes contained e. coli infected with the phage labeled with 32p? select all tubes that apply.

Which hypothesis most likely explains the results at 60°c and 70°c