The spaces that separate adjacent Schwann cells are
a. neuroglia.
b. myelin sheaths.
c. nodes.
d. dendrites.
e. synapses.
Answer: c
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Viruses that infect bacteria are specifically called ________.
A. prions B. satellite viruses C. viroids D. bacteriophages
Given the DNA oligonucleotide 5'-AGTCTAGGCT-3', reconstruct a sequencing gel based on dideoxy sequencing, showing the relative position of each DNA fragment (band) on the gel
What will be an ideal response?
In your genetics lab, you are following the expression of a given gene. In your experiment, you add acetyltransferase to a sample of DNA that contains your gene. Which of the following would you expect to see in your results, assuming you have the techniques to determine the possibilities?
a) Histones would become more positive which causes the chromatin to tighten for more gene expression. b) Histones would become less positive which causes the chromatin to tighten for more gene expression. c) Histones would become less positive which causes the chromatin to loosen for more gene expression. d) Histones would become less positive which causes the chromatin to loosen for less gene expression. e) Histones would become more positive which causes the chromatin to loosen for more gene expression.
A diploid organism whose somatic (nonsex) cells each contain 32 chromosomes produces gametes containing _____ chromosomes.
Fill in the blank(s) with the appropriate word(s).