Describe how the presence or absence of nucleosomes influences gene transcription

What will be an ideal response?


The binding of transcription factors requires accessing nucleosomal DNA. When nucleosomes are tightly associated with the DNA transcription, proteins can't access the DNA; however, when nucleosomes are loosely associated with the DNA, then the DNA transcription proteins have easier access to the DNA. To turn genes on and off, the nucleosomes need to modulate from being on or off the DNA.

Biology & Microbiology

You might also like to view...

Movement of vesicles within the cell depends on what cellular structures?

A) microtubules and motor proteins B) actin filaments and microtubules C) actin filaments and ribosomes D) centrioles and motor proteins E) actin filaments and motor proteins

Biology & Microbiology

What is the role of nonhistone proteins in the nucleus?

a. to regulate nuclear envelope formation b. to facilitate nuclear transportation c. to provide additional chromosomal structure d. to disassemble the nuclear envelope e. to aid in microtubule formation during mitosis

Biology & Microbiology

Four of the five answers listed below are different forms of a class of nucleic acids. Select the

exception. a. template b. ribosomal c. messenger d. transfer e. DNA

Biology & Microbiology

Fixation of carbon is accomplished by:

a. photosynthetic organisms. b. primary consumers. c. decomposers. d. bacterial decomposers. e. burning of organic matter

Biology & Microbiology