At the end of meiosis I
A. cells are haploid.
B. cells are diploid.
C. the homologous pairs are in separate cells.
D. the cells are diploid and the homologous pairs are in separate cells.
E. the cells are haploid and the homologous pairs are in separate cells.
E. the cells are haploid and the homologous pairs are in separate cells.
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Avery, MacLeod, and McCarty showed that DNA was the transforming principle by demonstrating that mice survived
when injected with a mixture of dead virulent bacteria and live nonvirulent bacteria that were treated with a DNA degrading enzyme. If RNA was the genetic material, what would have been the effect on the mice? Why?
What will be an ideal response?An organism that grows slowly in the cold but has an optimum growth temperature of 32°C is called a(n) ________.
A. thermophile B. facultative psychrophile C. thermoduric microbe D. extremophile E. psychrophile
Fluorescence microscopy is form of light microscopy
a. true b. false
Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is most analogous to a human _____
A) breathing faster as atmospheric carbon dioxide levels increase B) putting more red blood cells into circulation when atmospheric oxygen levels decline C) breathing more slowly as atmospheric oxygen levels increase D) increasing the volume of its lungs when atmospheric carbon dioxide levels increase