From what feature are jaws thought to have evolved?
a. pharynx
b. vertebrae
c. legs
d. arms
e. gill arches
ANSWER: e
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Which one of the following statements about gene regulation is incorrect?
A. Gene regulation occurs at the level of the chromosome. B. Gene regulation occurs at the level of transcription. C. Gene regulation occurs only in prokaryotes. D. Gene regulation occurs at the translational level. E. Gene regulation occurs at the posttranslational level.
The immediate ancestors of the genus Homo belonged to the genus:a
Australopithecus. b. Pongo. c. Pan. d. Sahelanthropus. e. Ardipithecus
Members of which of the following are the major primary producers in the marine ecosystem?
A. yeasts B. sponges C. sporozoans D. Fishes E. Diatoms
The expression "one bad apple spoils the whole bunch" probably has to do with the action of ethylene on fruit ripening.
Answer the following statement true (T) or false (F)