A deletion of one base pair that alters the sequence of codons is called a(n)
A. frameshift mutation.
B. oncogene.
C. substitution mutation.
D. transposon.
E. carcinogen.
Answer: A
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You are studying the hormonal control of metamorphosis in amphibians. If the anterior pituitary was prevented from
releasing TSH, what would be the effect on tadpoles?
a. Metamorphosis to adult frogs would be increased five-fold. b. Metamorphosis to adult frogs would not occur. c. Calcium secretion in tadpoles would be inhibited. d. Metabolism in tadpoles would be greatly increased. e. Metamorphosis would proceed, but arrest after limb formation.
What is the total number of different possible combinations of bases in a codon?
A) 20 B) 3 C) 64 D) 4
Denitrifying bacteria convert ________ to ________
A) ammonium; nitrates B) nitrates; nitrogen gas C) nitrogen gas; nitrates D) nitrogen gas; nitrites
Explain how a polar molecule, such as water, can have a difference in electrical charge but is also electrically neutral
What will be an ideal response?