BIOL 1090 Study Guide - Midterm Guide: Kinetochore, Inbreeding, Cytosine

566 views31 pages

Document Summary

Dna strands are polar, they each have a chemical polarity. The double helix is right handed and are held together by hydrogen bonds between bases and hydrophobic interactions adjacent stacked bases. The most common form of dna is known as b-dna and have two grooves. Eukaryotic chromosomes are composed of three elements: major, minor. The first level of packing dna as a negative supercoil into nucleosomes . Linker dna: varying in length from 8-114 nucleotide pairs. Thus, dna is wrapped around a nucleosome core of 8 histone proteins and has a 9th acting as an anchor. Second level of packing is an additional folding of the 11nm fibre to produce one of. 30nm (this is dna in its most condensed form and is the basic unit for the metaphase chromosome) driven by nucleosomal interactions and histone is involved. Third level of packing attachment of the new fibre at many positions to a non-histone protein.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers

Related Documents

Related Questions