Genetics From Genes to Genomes Study Set 1

Biology

Quiz 12 :
The Eukaryotic Chromosome

Quiz 12 :
The Eukaryotic Chromosome

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The enzyme that some organisms use to replicate DNA at the 5' ends of chromosomes is called
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B

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When a cell loses telomerase activity, what is the predicted effect?
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B

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The components of a chromosome include one long DNA molecule and
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B

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By weight, chromatin consists roughly of
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Histones and DNA have a strong attraction for each other because
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Select the statement that correctly describes the roles of histone and nonhistone proteins found in chromatin?
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The first level of compaction of DNA consists of
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The histone that appears to be responsible for organizing the 100 Å fibers into 300 Å fibers is
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In DNA, the 300 Å fiber is formed into structural loops.Responsibility for this function appears to lie with
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In what stage of mitosis are the highly-compacted chromosomes used for FISH?
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Which pieces of evidence support the radial loop-scaffold model of DNA packaging?
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The total compaction of DNA as seen in metaphase chromosomes is approximately ________-fold.
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The technique of preparing mitotic chromosomes involves a staining procedure using Giemsa stain.One variation of this technique allows a low-resolution of chromosome bands while a second variation allows a high resolution.At low resolution we can see about ________ bands while at high resolution we see about ________ bands.
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During DNA replication in a typical human cell,
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In mammalian cells, replication proceeds
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The 10,000 origins of replication in mammalian cells suggests that there is
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Yeast research with autonomously replicating sequences (ARS), along with digestion of chromatin with DNase I, have led scientists to determine that
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In a typical human cell, DNA polymerase synthesizes DNA at a rate of approximately 50 nucleotides per second.Human chromosome 1 contains about 250 million base pairs.If a single origin of replication were used, how long would it take the cell to copy this chromosome?
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Telomeres have at least two roles in chromosome integrity.Telomeres are composed of repeat sequences homologous to the RNA in telomerase used to replicate chromosome ends.Second, they
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The two chromatids of each replicated chromosome must separate from one another and segregate during
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