The insertion of a therapeutic gene into chromosomes at a site near a proto-oncogene unexpectedly caused which disease in boys with an X-linked genetic disorder?
A. Autoimmune diseases
B. Fungal diseases
C. Leukemia
D. Alzheimer's disease
E. AIDS
Answer: C
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In eukaryotes, general transcription factors _____
A) are required for the expression of specific protein-encoding genes B) bind to other proteins or to the TATA box C) inhibit RNA polymerase binding to the promoter and begin transcribing D) usually lead to a high level of transcription even without additional specific transcription factors E) bind to sequences just after the start site of transcription
Most often, genomic library screening uses ____
a. a labeled, complementary single-stranded RNA or DNA molecule called a probe b. colonies of vector bacteria on a Petri dish in order to replicate the desired genome c. recombinant plasmids containing DNA and DNA ligase d. cut plasmids containing recognition sites used to carry DNA molecules e. tRNA polymerase copies with a truncated copy of a DNA template
The genetic material of all living organisms is ____
a. protein b. deoxyribonucleic acid c. ribonucleic acid d. glycoprotein e. polypeptide
In the figure above, the two strands have
separated in step "b" because
a. the sugar-phosphate bonds were broken. b. the hydrogen bonds between bases were broken. c. energy from primers pushed the bases apart. d. the bases, being negatively charged, repelled each other. e. proteins were inserted between each pair of bases.