1. Cell Division: 3 types Do Now:
Arrange the following from SMALLEST to LARGEST:
Eukaryotic cell
Chromosome
Atom
Prokaryotic cell
Protein
Multicellular organism

2. Cell Division
Cell division, or reproduction comes in many forms, but there are some important similarities common to all.
The DNA of the cell is copied.
The cell divides one or more times, so 2 or more cells exist after 1 cell divides.

3. Binary Fission Simplest form of division. Done by prokaryotes.
Chromosome copied, cell divides.
Results in 2 identical daughter cells.

4. Mitosis
Mitosis is the type of cell division used by humans and other multicellular organisms to produce new body cells.
In this process, one diploid cell copies all of its chromosomes (to become tetraploid) and then divides once to produce 2 new diploid cells identical to the parent cell.
The process involves several stages we will investigate next week.

5. Meiosis is a specialized form of cell division used only by organisms that reproduce sexually.
Meiosis produces gametes, which are haploid cells such as sperm and egg cells required for sexual reproduction.
A specialized diploid cell (in the gonads) copies its chromosomes to become 4n, then divides twice to produce 4 new haploid gametes.
Fertilization is when two haploid gametes combine to form a new diploid individual.