Q: What is a nucleosome-free region? Where are such regions
What is a nucleosome-free region? Where are such regions typically found in a genome? How are nucleosome-free regions thought to be functionally important?
See AnswerQ: Histones are thought to be displaced as RNA polymerase is transcribing a
Histones are thought to be displaced as RNA polymerase is transcribing a gene. What would be the potentially harmful consequences if histones were not put back onto a gene after RNA polymerase had pas...
See AnswerQ: What is an insulator? Describe two different ways that insulators may
What is an insulator? Describe two different ways that insulators may exert their effects.
See AnswerQ: What is DNA methylation? When we say that DNA methylation is
What is DNA methylation? When we say that DNA methylation is heritable, what do we mean? How is it passed from a mother to a daughter cell?
See AnswerQ: Let’s suppose that a vertebrate organism carries a mutation that causes some
Let’s suppose that a vertebrate organism carries a mutation that causes some cells that normally differentiate into nerve cells to differentiate into muscle cells. A molecular analysis reveals that th...
See AnswerQ: What is a CpG island? Where would you expect one to
What is a CpG island? Where would you expect one to be located? How does the methylation of CpG islands affect gene expression?
See AnswerQ: Describe how the binding of iron regulatory protein to an IRE affects
Describe how the binding of iron regulatory protein to an IRE affects the mRNAs for ferritin and the transferrin receptor. How does iron (Fe3+) influence this process?
See AnswerQ: What is meant by the term RNA world? Describe observations and
What is meant by the term RNA world? Describe observations and evidence that support this hypothesized period of life on Earth. From the perspective of living cells, what are the advantages of having...
See AnswerQ: Describe two different ways that histone modifications may alter chromatin structure.
Describe two different ways that histone modifications may alter chromatin structure.
See AnswerQ: Explain how HOTAIR plays a role in the transcriptional regulation of particular
Explain how HOTAIR plays a role in the transcriptional regulation of particular genes.
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