A ________ is a single-stranded DNA molecule attached to a radioactive or fluorescent compound that is complementary to a specific sequence of DNA. Such pieces of DNA are used to identify and study cloned genes in hybridization experiments
A) polypeptide
B) promoter
C) vector
D) probe
E) plasmid
D
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The chances of surviving sudden cardiac arrest increases by ___ percent when the affected person receives
cardiopulmonary resuscitation (CPR) within ___ minutes after the event.
a. 100; a few b. 50; a few c. 50; 10 d. 100; 10 e. 50; 20
The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger length. Assume that a female with brachydactyly in the heterozygous condition is married to a man with normal fingers
What is the probability that (a) their first child will have brachydactyly? (b) their first two children will have brachydactyly? (c) their first child will be a brachydactylous girl?
The total number of different three-base combinations of the four nucleic acid bases is:
a. 12. b. 16. c. 20. d. 64. e. 256.
Which of the following mutations would not result in antibiotic resistance?
a. Missense mutation b. Nonsense mutation c. Silent mutation d. Frameshift insertion e. Frameshift deletion