What produces gene flow?
A) mating between populations
B) geographical isolation
C) mutation
D) speciation
A
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After which step in the Gram-stain procedure are gram-positive bacteria first distinguished from gram-negative bacteria?
a. Crystal violet b. Iodine mordant c. Gram's decolorizer d. Safranin
All viruses have genes encoding at least:
a. their coat proteins. b. enzymes required for nucleic acid replication. c. their coat proteins and enzymes required for nucleic acid replication. d. a plasma membrane. e. their coat proteins and a plasma membrane.
Write a one-sentence explanation for the role of each of the following plant hormonelike signaling
molecules: methyl salicylate and jasmonic acid. What will be an ideal response?
When aldosterone is secreted into the blood, blood pressure will ____________ .
Fill in the blank(s) with the appropriate word.