How many genes does the human genome
contain?
a. about 5,000 genes
b. about 10,000 genes
c. about 20,000 genes
d. about 30,000 genes
e. about 7,000 genes
C
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Which of the following represents the correct order of vertebrate gastrointestinal tract layers, going from outside the tract to inside the tract?
A. the serosa, submucosa, and the lumen B. the submucosa, the mucosa, the lumen, the plexuses, and the serosa C. the serosa, the mucosa, and the submucosa D. the serosa, submucosa, and the mucosa E. the mucosa, the plexuses, and the serosa
According to the first law of thermodynamics,
a. the energy of a system may increase if there is a corresponding decrease in energy elsewhere in the universe. b. the amount of energy in the universe is constant. c. chemical reactions do not create or destroy energy. d. energy can change from one form to another. e. all of these are true
Once a chromosomal position for a putative gene associated with Parkinson disease is verified, which of the following is a next step?
A) developing a FISH screening test to identify pre-Parkinson patients B) determining whether this locus is mutated in all Parkinson patients C) using a genome-wide linkage SNP panel to identify more minor genes D) ascertaining all living and at-risk individuals who are family members of the affected test subjects E) fine mapping of the linkage region to identify particular variants for influencing risk
Which of these nitrogenous bases is found in DNA but not in RNA?
a. cytosine b. uracil c. thymine d. adenine e. guanine