1. Unit 3 Chapter 10 Cell Cycle
Section 10.1

2. A) Chromosome Structure
Chromosomes: rod-shaped structure that holds DNA and proteins -histones: protein that DNA wraps around -nonhistone: proteins that help control DNA activity

3. A) Chromosome Structure
Sister Chromatids: halfs of a chromosomes that contain identical info. Centromere: connecting point of sister chromatids Chromatin: loosely coiled DNA and histones in eukaryotes

4. Chromosome Structure

5. A) Chromosome Structure
5) Prokaryotes: - 1 chromosome - Circular DNA

6. B) Chromosome Numbers
Sex Chromosomes: mainly determine sex of organism, but do carry other information
- Female: XX
- Male: XY

7. All autosomes are in identical pairs
B) Chromosome Numbers
Autosomes: Any other chromosome
All autosomes are in identical pairs
Homologous pairs: two copies of each autosome
Code for same size, shape, and traits

8. B) Chromosome Numbers
Karyotypes: chart of a complete set of chromosomes for an organism
-Humans have 46 chromosomes  23 chromosomes from each parent

10. B) Chromosome Numbers
Diploid: any set of chromosome pairs
Haploid: 1 chromosome, generally sex cells (sperm, eggs)