In the Lederberg and Tatum experiment what is the purpose of performing the experiment with the strains without adding them together?
A. It serves as a control to calculate the rate of reversion mutations
B. There is no experimental purpose to performing that part of the experiment
C. It tests that the strains were made correctly
D. It tests to make sure the media was made correctly
A
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A cyclin _____
A) is present in similar concentrations throughout the cell cycle B) is activated by binding to microtubules C) decreases in concentration when MPF activity increases D) activates a Cdk molecule when it is in sufficient concentration E) activates a Cdk when its concentration is decreased
Living organisms must gather energy and materials from their surroundings to ____
a. build new biochemicals b. grow c. maintain and repair their parts d. produce offspring e. all of these
Large cellular polymers assembled by chemically linking monomers together are called ____
a. carbohydrates b. lipids c. proteins d. nucleic acids e. macromolecules
Summarize the major advantage of using YACs to carry genome libraries. What will be an ideal response?