The development and use of ____ ushered in the era of genomics when geneticists began planning ways to sequence
the 3.2 billion nucleotides in the human genome.
a. transmission genetics
b. the electron microscope
c. recombinant DNA technology
d. cytogenetics
e. karyotypes
ANSWER: c
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A urine culture was set up using a 0.001-mL calibrated loop. It yielded 100 colonies. Which of the following results would be reported to the physician?
A) 100 CFU/mL B) 1,000 CFU/mL C) 10,000 CFU/mL D) 100,000 CFU/mL
A conclusion is a judgement based on verifiable piece of information
a. true b. false
The gene on the Y chromosome that induces development of male genitalia is called the ___________
Fill in the blank(s) with the appropriate word.
An allosteric transcription regulator called HisP regulates the enzymes for histidine biosynthesis in the bacterium E. coli. Histidine modulates HisP activity
On binding histidine, HisP alters its conformation, markedly changing its affinity for the regulatory sequences in the promoters of the genes for the histidine biosynthetic enzymes. A. If HisP functions as a gene repressor, would you expect that HisP would bind more tightly or less tightly to the regulatory sequences when histidine is abundant? Explain your answer. B. If HisP functions as a gene activator, would you expect that HisP would bind more tightly or less tightly to the regulatory sequences when histidine levels are low? Explain your answer.