The letter "A" in the accompanying figure represents ____
a. pericycle
b. endodermis
c. primary xylem
d. root cortex
e. primary phloem
ANSWER: d
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The Sanger sequencing approach developed in the 1970s
A. has been rendered obsolete by the development of fundamentally different methodologies. B. is still the main approach used to determine nucleotide sequences. C. is applicable to RNA but not DNA. D. is useful for sequencing small DNAs but is not applicable to genome sized DNA molecules.
In the mid-1970s a group of scientists asked the National Academy of Sciences to appoint a panel to assess the risks of
recombinant DNA technology and the need to control its associated research. Summarize the most important lesson learned from this event. What will be an ideal response?
Which of the below is not one of the six dimensions of health?
a. emotional b. spiritual c. environmental d. stress
Mammals, like humans and apes, have five digits on their fore and hind limbs. Modern horses have one. How might you reconstruct the ancestral state of mammal toe number?
A. Investigate the number of toes on all extant horses and apes. B. Investigate the number of toes for other mammals and use parsimony to deduce the ancestral state. C. Investigate the number of toes for an outgroup that is closely related to mammals, for example reptiles or amphibians. D. Either b or c E. All of the above