Boxes 1 and 2 of the figure most likely represent different
A. species.
B. clones.
C. gene pools.
D. communities.
C. gene pools.
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Which of the following structures constitute the carpel of a flower? Select all correct choices
A. ovary B. anther C. style D. stigma E. stamen
Which of the following is FALSE when comparing RNA and DNA?
A. Both contain nucleotides connected by phosphodiester linkages. B. Both contain phosphate groups. C. Both are composed of nucleotides that contain sugars. D. Both are composed of identical nucleotides. E. Both are composed of nucleotides that contain a phosphate group, a pentose sugar, and a nitrogenous base. F. Both have a 5’ end and a 3’ end. G. Both are composed of purines and pyrimidines.
Behavioral traits are useful in distinguishing among species because
a. behaviors are always genetically determined. b. courtship behaviors and timing of mating may create prezygotic isolation. c. behaviors are easy to assess in dead and fossilized specimens. d. behaviors are independent of morphological characteristics. e. behaviors are always learned
If high amounts of sulfanilamide are in the presence of an enzyme whose substrate is PABA, what outcome is expected?
a. PABA products will increase in concentration. b. The enzyme will stop functioning. c. The substrate will destroy the inhibitor. d. Sulfanilamide products will be in higher concentration.