1. MITOSIS
animation

2. Mitosis Vocabulary Gene Chromosome Chromatin
a segment of DNA that codes for a protein or RNA molecule.
Chromosome
structure made of DNA and proteins on which genes are located
Chromatin
long and thin- genetic material in the nucleus during interphase

3. Chromatids Sister Chromatids Centromere Karyotype
A shortened and condensed chromosome. Appears during mitosis and meiosis.
Sister Chromatids
2 identical chromatids joined by a centromere
Centromere
The place at which sister chromatids are attached
Karyotype
a display of all chromosomes arranged according the size, centromere location, and banding pattern.

4. Homologous Chromosomes-
chromosomes that carry genes for the same traits in the same position along the chromosome
Diploid
When a cell contains two sets of chromosomes (2n)
Haploid
When a cell, such as a gamete, contains one set of chromosomes (n)
Fertilization
The union of an egg and a sperm
(n + n = 2n)
Zygote
The fusion of 2 gametes-- a fertilized egg cell (the first cell of a new individual)
Gametes
an organisms reproductive cells, such as sperm or egg cells (contain half the number of chromosomes)

5. Mitosis nuclear division
the same number of chromosomes are distributed into each nucleus.
The chromosome # in the original cells and the resulting cells stays the same…WHY???
animation