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6 Nov 2018

Distinguish between euchromatin and heterochromatin. Also, whatare the phases of mitosis? What happens in each phase?

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Reid WolffLv2

6 Nov 2018

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The distinction between heterochromatin and euchromatin is:

A. euchromatin is more highly condensed thanheterochromatin.
B. euchromatin tends to have unique sequences of DNA.
C. heterochromatin is more transcriptionally active.
D. heterochromatin has more frequent recombination.
E. None of the above.

1) How is chromatin state controlled?

- What features distinguish euchromatin from heterochromatin?

- What gene expression profiles and histone modification profiles are associated with each?

2) How do nuclear lamina cause heterochromatin to form?

1) Androgens are steroid hormones. This is an example of what type of cellular signaling? Where would you expect the receptor for androgen to be?

2) Describe the relationship between enhancers, silencers, activators, repressors and transcription factors.

3) If a gene is moved experimentally from a DNA region of Euchromatin to heterochromatin its expression would probably increase or decrease? Why?

Biology 460,000