click below
click below
Normal Size Small Size show me how
Biology Test 5
Mitosis and Meiosis
| Term | Definition |
|---|---|
| Chromosomes | rod-shaped structures made of DNA and proteins |
| Histones | what the DNA in eukaryotic cells wraps tightly around |
| Chromatid | each half of the chromosome |
| sex chromosomes | chromosomes that determine the sex of an organism |
| autosomes | all other chromosomes that carry genes |
| homologous chromosomes | the two copies of each autosome that was produced by sexual reproduction |
| karyotype | a photo-micrograph of the chromosomes in a normal dividing cell |
| diploid | cells having two sets of chromosomes and have two autosomes for each homologous pair; 2n |
| haploid | sperm cells and egg cell which contain only one set of chromosomes; 1n |
| spermatogenesis | the production of sperm cells |
| oogenesis | the production of mature egg cells, or ova |
| binary fission | the division of a prokaryotic cells into two offspring cells |
| cancer cells | cells that grow and divide at an unregulated quickened pace |
| steps of mitosis | Interphase, prophase, metaphase, anaphase, telophase |
| steps of meiosis | prophase I, metaphase I, anaphase I, telophase I and cytokinesis, prophase II, metaphase II, anaphase II, and telophase II and cytokinesis |
| Three parts to a chromosome | chromosome, chromotid, centromere |
| steps of meiosis that are diploid | prophase 1, metaphase 1 |