Woese developed the three-domain system based on differences in organisms'
A. cell morphologies.
B. rRNA sequences.
C. Gram stain reactions.
D. habitats.
Ans: B. rRNA sequences.
Biology & Microbiology
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Species of show the greatest diversity in the Cenozoic era
a. birds b. trilobites c. reptiles d. insects
Biology & Microbiology
After locating a genome region likely to include a QTL, what must be found in this region?
What will be an ideal response?
Biology & Microbiology
What are two ways that a reverse mutation can occur?
What will be an ideal response?
Biology & Microbiology
The signal/messenger responsible for opening the gated channel in Figure 42-4 is:
a. ATP.
b. ADP.
c. cAMP.
d. K+.
e. Na+.
Biology & Microbiology