BIO 340 |General Genetics | PROBLEM SET 3| with 100- accurate solutions

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B IO 340: Gener al Genetics PROB LEM
SET 3 w ith 100% accur ate solu tions
Ar izona State Univer sity
Recitation Quiz Name: _________ KEY
_____________________
Problem Set 3 □ Section A □ Section B □ Section C

Chapter 11: Chromosome Structure

MULTIPLE CHOICE (2 PTS EACH): Circle the correct answer to each
of the questions that follow.

1. Three of the following options pertain to the organization of
eukaryotic chromosomes. Which one describes how bacterial
chromosomes are organized and compacted?

by association with proteins that form crude loops

Bacterial chromosomes are organized into loop domains that
are secured by two major groups of proteins: small nucleoid-
associated proteins and structural maintenance of chromosome
(SMC) proteins.

2. To what extent does wrapping DNA around histone octamers
condense chromatin?

7-fold

The wrapping of DNA around nucleosomes decreases the
overall length of the chromosome approximately 7-fold.
Second-level compaction to form a solenoid compresses the
chromosome another 6-fold, for a total compaction of 42-fold
compared to a naked DNA double helix.


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