X-rays
A. have no effect on DNA.
B. cause thymine trimers.
C. cause single and double strand breaks in DNA molecules.
D. make the DNA radioactive.
C
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A coccus
a. is a rod-shaped bacterium. b. is a spherical bacterium. c. is a bacterium with an intermediate shape (between spherical and rod-shaped) d. is a spiral-shaped bacterium. e. is a polymorph bacterium
Which of the following is the primary fuel source for transportation?
a. nuclear energy b. renewable energy c. coal d. natural gas
e. petroleumWhat characteristic describes wind-pollinated plants?
A. red flowers to attract birds B. small, greenish flowers C. growth in close proximity to each other D. small, greenish flowers and growth in close proximity to each other E. All of these are correct.
Suppose that in the use of polynucleotide phosphorylase, nucleotides A and C are added in a ratio of 1A:5C. What is the probability that an AAA sequence will occur?
What will be an ideal response?