DNA damage caused by ethidium bromide results in __________ mutations.
A) insertion
B) substitution
C) deletion
D) both inversion and insertion
E) both insertion and deletion
Answer: E) both insertion and deletion
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Ribozymes
A. are complexes of ribosomes and RNA. B. are self-catalytic RNA. C. suggest that nucleic acids evolved before proteins. D. are enzymes that degrade RNA and therefore have potential for clinical applications. E. are self-catalytic RNA AND suggest that nucleic acids evolved before proteins.
Which of the following is NOT one of the four
major intervals in the geologic time scale? a. Mesozoic b. Proterozoic c. Carboniferozoic d. Cenozoic e. Paleozoic
Bones in joints are connected by
a. ligaments. b. cartilage. c. tendons. d. fibrocartilage discs. e. latticework.
The PCR technique doubles the amount of DNA in a sample in each cycle. If you started the PCR technique with two fragments of double-stranded DNA, calculate how many double-stranded DNA fragments you would you have after four cycles
A) 8 B) 16 C) 32 D) 64