How many cross-over events are depicted in the following figure?
a. zero
b. one
c. two
d. four
e. five
B
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________ is used to measure the state of development of a biological community
a. Gross primary production b. Climax c. Community respiration d. Gross primary production to community respiration ratio
What is a sigma factor? How does elevated temperature induce transcription of heat shock proteins in bacteria via a sigma factor?
What will be an ideal response?
Natality is greater than mortality during the ____ phase.
A. stable equilibrium B. lag C. exponential growth D. death
The niche of an organism includes all of the following, except
A. position in the community structure. B. number of offspring it produces. C. nutritional intake. D. rate of population growth. E. All of the choices are included in the description of an organism's niche.