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Cell Reproduction


Home | 6-1 Chromosomes | 6-2 Mitosis and Cell Division | The Cell Cycle | 6-3 How Gametes Form: Meiosis | Vocabulary

Key Words from Chapter Six.

Chromosomes-compact structure of tightly coiled DNA that forms prior to mitosis
Chromatin-a threadlike complex of DNA and proteins in the nucleus of a nondividing cell
Karyotype-array of the chromosomes found in an individual's sells arranged in order of size and shape
Diploid-describes cells that have two sets of chromosomes
Haploid-describes cells that have only one set of chromosomes
Sex Chromosome-either member of a pair of chromosomes responsible for sex determination
Mitosis-nuclear division, involes copying and seperating chromosomes into two nuclei
Cytokinesis-division of the cytoplasm following mitosis
Cell Cycle-5-phase sequnce of eukaryotic cell growth and division
Tumor-formation of a mass of cells as a result of abnormally rapid cell division
Cancer-a condition in which normal restraints on cell reprodution break down, resulting in rapid, uncontrolled cell division
Mutation-aburt change in genotype of an organism
Gamete-a haploid reproductive cell, such as an egg or sperm cell
Meiosis-a form of cell division that reduces the number of chromosomes in a cell by half
Crossing-over-exchange of genetic material between paired homologous chromosomes during meiosis

"Biology is the only science in which multiplication means the same thing as division."