Total lung capacity is indicated by ____
a. A + B
b. B + C
c. C + E
d. D + E
e. E + A
ANSWER: c
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Ovulation is indicated by the letter ____
a. A b. B c. C d. D e. E
What molecular structure is used by geneticists to insert foreign DNA into a recipient bacterial cell that will replicate the foreign DNA?
A) codon B) anticodon C) genome D) plasmid
In fragile X syndrome, the fragile X gene contains a nucleotide triplet that repeats 200-1000 times. Indicate whether the statement is true or false
Observe Figure 25.2(a) of your lab manual. The disc in the center of the plate is saturated with a chemical being tested for mutagenic properties. As you know, this chemical has mutagenic properties because there are numerous revertant colonies on the plate. The concentration of the test chemical is highest in areas closest to the disc, and lowest in areas furthest from the disc. Why aren’t there revertant colonies in areas where the test chemical (which causes the reversions) is the greatest?
A) In high concentrations the test chemical is toxic B) In high concentrations the test chemical causes DNA repair C) In high concentration the test chemical causes spontaneous mutations