A scientist is working in a lab sequencing DNA. After reading the results from a column of gel scanned in a fluoroscope, she determines that the sequence of bases in the newly synthesized DNA is AATTCCCGG
Which one of the following represents the sequence of bases on the complementary strand? A) GGCCAAATT
B) UUTTCCCGG
C) AATTCCCGG
D) UUAAGGGCC
E) TTAAGGGCC
E
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If a foreign gene is cloned into an expression host, it is important that the host itself
A) not produce the protein being studied. B) produce the protein in larger amounts than the vector. C) repress the genetic expression being studied. D) produce signal proteins to tag the host protein.
Microbial species are difficult to define because they are often polyphyletic
Indicate whether the statement is true or false.
Neisseria gonorrhoeae of the reproductive tract in women
A) is usually initially asymptomatic. B) produces severe inflammation of the vagina and cervix. C) results in the formation of curd-like discharge. D) results in the production of a yellow-greenish frothy discharge. E) produces painful ulcerations.
What substance is used in medicine to produce various images of organs and tissues?
A. a colloid B. a tracer C. an emulsion D. a mixture E. a sensor