In general, in a sample of n individuals, the frequency of an allele is
A. the number of occurrences of the allele.
B. the number of occurrences of the allele
divided by n.
C. the number of occurrences of the allele
divided by twice the number of individuals in
the sample (2n).
D. twice the number of occurrences of the
allele divided by n.
C
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Which of the following statements are true about resting membrane potential? Select all correct choices
A. It results from the sodium-potassium pump moving more Na+ ions out of the cell compared to the number of K+ ions moved into the cell. B. It results from K+ ions moving out of the cell through passive diffusion. C. It results from voltage-gated sodium channels remaining open for long periods of time.
What is the relationship between operons and transcription units?
a. They are synonymous terms. b. An operon consists of a transcription unit plus associated regulatory DNA sequences. c. A transcription unit consists of an operon plus associated regulatory DNA sequences. d. An operon is composed of multiple transcription units. e. A transcription unit is composed of multiple operons.
How do intertidal brown algae compete with barnacles and mussels for space?
What will be an ideal response?
If you wanted to block transmission of nerve impulses between successive neurons, you would design a drug to impair
A. axons. B. dendrites. C. synapses. D. trigger zones. E. nodes of Ranvier.