In human populations, Hardy-Weinberg equilibrium is seen
A) in small, isolated communities.
B) in populations with many immigrants.
C) in communities founded by a small number of people.
D) infrequently and in large communities with random mating.
D) infrequently and in large communities with random mating.
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Epistasis and multiple alleles differ in that
A) epistasis is an interaction between two genes, and multiple alleles are variants of the same gene. B) epistasis affects males and multiple alleles occur in females. C) epistasis only occurs in genes that have multiple alleles. D) in epistasis one gene masks another, but one allele cannot mask the effect of another.
In contrast to these toxins, strychnine acts postsynaptically, to block glycine from binding to receptors on motor neurons. Would you expect the symptoms of strychnine poisoning to be more similar to those of botulinum or tetanus toxin?
A. botulinum B. tetanus toxin C. botulinum Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about strychnine? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following includes all the others?
a. actin b. myofibril c. myosin d. myofilament e. muscle cell
Communication between neurons is achieved by
A. hormones. B. electricity. C. neurotransmitters. D. depolarizing the synapse.