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Questions and Answers
Euchromatin refers to DNA that is tightly wound and not accessible for transcription.
Euchromatin refers to DNA that is tightly wound and not accessible for transcription.
False
The estimated number of genes in the human genome is closer to 46,000 than to 23,000.
The estimated number of genes in the human genome is closer to 46,000 than to 23,000.
False
Introns are regions of genes that are translated into proteins.
Introns are regions of genes that are translated into proteins.
False
All proteins are derived from the same number of genes as are present in the human genome.
All proteins are derived from the same number of genes as are present in the human genome.
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A transcription initiation site is the location where RNA polymerase begins the process of translation.
A transcription initiation site is the location where RNA polymerase begins the process of translation.
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Transcription factors can activate one gene while silencing another by binding to different __________.
Transcription factors can activate one gene while silencing another by binding to different __________.
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DNA methylation activates transcription by modifying cytosine bases in the promoter regions of genes.
DNA methylation activates transcription by modifying cytosine bases in the promoter regions of genes.
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Enhancers can only reside immediately next to the promoter they regulate.
Enhancers can only reside immediately next to the promoter they regulate.
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X chromosome inactivation in female cells is an example of transcription being silenced through a methylation mechanism.
X chromosome inactivation in female cells is an example of transcription being silenced through a methylation mechanism.
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The PAX6 transcription factor is primarily involved in regulating the expression of blood proteins in muscle cells.
The PAX6 transcription factor is primarily involved in regulating the expression of blood proteins in muscle cells.
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The role of hedgehog in the signaling pathway is to directly activate the protein Smoothened.
The role of hedgehog in the signaling pathway is to directly activate the protein Smoothened.
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WNT proteins are primarily associated with regulating neural tube induction.
WNT proteins are primarily associated with regulating neural tube induction.
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The human genome contains approximately 100,000 distinct genes.
The human genome contains approximately 100,000 distinct genes.
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The basic unit of chromatin structure is the nucleosome.
The basic unit of chromatin structure is the nucleosome.
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Euchromatin is the tightly coiled form of chromatin that is inactive during transcription.
Euchromatin is the tightly coiled form of chromatin that is inactive during transcription.
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