Except for the stop codons, the codons in the genetic code specify which of ____ amino acids to use
a. 5
b. 64
c. 4
d. 20
e. 3
D
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Which of the following is NOT related to genetic drift?
A. Founder effect. B. Bottleneck effect. C. Sexual selection. D. Both the founder effect and the bottleneck effect. E. Both sexual selection and bottleneck effect.
The Earth's surface releases __________ that is absorbed by the atmosphere, stabilizing or raising atmospheric temperature.
A. gamma radiation B. ultraviolet radiation C. near-ultraviolet radiation D. x-rays E. x-ray radiation
Organisms can perceive different intensities of a stimulus by
a. an increase in the frequency of action potentials of an afferent neuron. b. an increase in intensity of the action potentials of an afferent neuron. c. an increase in the numbers of afferent neurons generating action potentials. d. an increase in intensity and frequency of action potentials as well as an increase in the number of cells generating action potentials. e. an increase in the frequency of action potentials generated by an afferent neuron as well as an increase in the numbers of afferent neurons generating action potentials, but without any change in the intensity of individual action potentials generated by the neurons.
Would Clostridium botulinum be a good microorganism to use for biological warfare? Explain
What will be an ideal response?