When zygosporangia germinate, they must undergo ________ before forming hyphae
A) fertilization B) mitosis C) sporulation D) meiosis
D
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The different chipmunk species correspond to the different tree species along an elevational gradient. This is likely because
A) each chipmunk species depends on the specific tree species for habitat. B) lodgepole trees and lodgepole chipmunks prefer warmer temperatures. C) the fundamental niche of yellow-pine chipmunks is limited to middle elevation. D) several resource factors for both groups change with elevation.
Scientists are able to determine the location of cells expressing a certain gene in an embryo by:
a. the polymerase chain reaction. b. blastoderm fate mapping. c. gene mapping. d. immunofluorescence. e. multiple Southern blots.
A diet offered to experimental animals that is composed of a wide variety of palatable foods
What will be an ideal response?
Secondary metabolites are often useful, and are obtained by
A) harvesting a culture during log phase. B) allowing a culture to enter stationary phase. C) growing a culture at sub-optimal temperature. D) adding chemicals that alter metabolic pathways. E) using continuous flow culturing.