1. Review
What is the difference between chromatin, chromatids, and chromosomes?
Chromatin = DNA uncoiled (loose), Chromatid = One half of a chromosome, Chromosome = 1 long continuous thread of DNA that has been tightly coiled
2) Name the location where chromatids connect. Centromere
3) Examine the karyotype.
What the haploid number? 12
Diploid number? 24
Somatic number? 24
Gamete number? 12

2. 4) What is the difference between autosomes and sex chromosomes?
Autosomes are chromosome pairs 1-22 in Humans and contain genes for characteristics not directly related to gender. Sex chromosomes are pair 23 in Humans and contain genes for characteristics related to gender and gender development.
5) Which of the following cells are created by mitosis?
Skin Nerve Sperm Brain Kidney Stomach Pollen
6) Which of the following cells are created by meiosis?
7) Which of the following cells are haploid?
8) Which of the following cells are diploid?

3. A B C 8) A, B, or C: Which karyotype is from a diploid cell? C
9) A, B, or C: Which karyotype could be from a muscle cell? C
10) A, B, or C: Which two karyotypes could be from a sperm cell? A, B
11) A, B, or C: Which karyotype is from an egg cell? A
12) A, B, or C: Which two karyotypes are from a haploid cell? A, B