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A scientist made a radioactively labeled probe using viral DNA. If the probe
hybridizes with a small piece of DNA isolated from human tissue, the
scientist could conclude any of the following except:
A. the virus contaminated the reaction that made the probe.
B. the Geiger counter that detected radiation was broken.
O C. the human genome might contain at least one viral gene.
D. the virus uses a different genetic code than humans.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page

If a baby girl guinea pig looks almost identical to its mother, does this then mean that it inherited more alleles from its mother? explain. (hint: think about the vocabulary words dominant and recessive.)