1. Unit 3 Chapter 10 Cell Cycle
Section 10.1

2. A) Chromosome Structure
1. Chromosomes: rod-shaped structure that holds DNA and proteins histones: protein that DNA wraps around 2. Sister Chromatids: halfs of a chromosomes that contain identical info. 3. Centromere: connecting point of sister chromatids 4. Chromatin: loosely coiled DNA and histones in eukaryotes

3. Chromosome Structure

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

5. 3. Homologous pairs: two copies of each autosome
B) Chromosome Numbers
2. Autosomes: Any other chromosome
3. Homologous pairs: two copies of each autosome

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

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