Sites within the DNA that gain extensively more than the number of mutations expected from a random distribution are called __________
a. point mutations
b. hotspots
c. suppression
d. silent mutations
e. transition
Ans: b
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Refer to the cladogram below. Which synapomorphy is common to the lizard and rabbit but not the salmon?
A. Notochord.
B. Vertebrae.
C. Tetrapod locomotion.
D. Mammary glands.
CAM plants differ from C4 plants in that CAM plants ________ while C4 plants ________
a. none of the choices b. fix carbon in two separate chambers to keep CO2 high near rubisco / fix carbon mostly at night c. produce 3-carbon PGA as the first stable intermediate / produce 4-carbon oxaloacetate as the first stable intermediate d. open stomata and fix carbon using a C4 pathway at night / fix carbon first in mesophyll cells and again in bundle sheath cells
Imagine that a plant in your garden doesn't receive an adequate amount of water. Which of the following would be most affected by this?
A) Neither the light reactions nor the Calvin cycle of photosynthesis B) The Calvin cycle of photosynthesis only C) The light reactions of photosynthesis only D) Both the light reactions and the Calvin cycle of photosynthesis
The most important aspect of agar that makes it a useful ingredient for solidifying media for bacterial culture is ________.
A. because it provides an excellent carbon and energy source for bacteria B. because it melts at 100oC and solidifies at temperatures below 40oC C. because bacteria are unable to break it down so it stays solidified D. because it provides an excellent nitrogen source for bacteria