The fact that most segmentation genes code for ____ indicates that these protein products are ____ that regulate the
expression of other genes.
a. homeobox genes; genetic switches
b. transcription factors; genetic switches
c. transcription factors; inducers
d. maternal effect genes; protein switches
e. hormones; signaling molecules
b
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The rate of exchange of carbon between the atmosphere and the oceans represents a carbon:
A. sink. B. reservoir. C. biomass. D. precipitation. E. flux.
What tissues in an animal's body are the targets of genes for behavior?
A. axial skeleton B. forebrain and liver C. nervous system and musculature D. reproductive and urogenital E. innate and instinctual
A researcher brings a sample of dry soil to the lab, wets it, provides ample amounts of fertilizer, and places the soil in a container in a greenhouse. Which type of plant would be least likely to emerge?
A. Pine seedling B. Sunflower C. Corn D. Wheat E. Liverwort Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about plant propagation? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Rosalind Franklin's research contribution was essential in _____
a. establishing the single-stranded nature of DNA b. establishing the principle of base pairing c. establishing most of the principal structural features of DNA d. sequencing DNA molecules e. determining the bonding energy of DNA molecules