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Cell Division
| Term | Definition |
|---|---|
| binary fission | prokaryotic cell division |
| chromosome | made of DNA and contains our genes that control our traits |
| sister chromatid | copies of a chromosome attached by a centromere |
| centromere | attachment paint for sister chromosomes |
| centriole | organelles that move the chromosomes |
| spindle | attaches to the centromere and the centrioles to move the chromosomes |
| cell cycle | life cycle of a cell |
| interphase | longest part of the cell cycle |
| G1 | growth and metabolism occur |
| S | replication of chromosomes occurs |
| G2 | preparation for mitosis |
| G0 | non-dividing cells |
| mitosis | division of the nucleus |
| prophase | chromosomes become visible |
| metaphase | chromosomes line up in the middle |
| anaphase | sister chromatids are seperated |
| telophase | nucleus reform in 2 new cells |
| cytokinesis | division of |
| animal cell | forms a cleavage furrow |
| plant cell | cell plate forms between the 2 new cells |
| meiosis | cell division that produces haploid gametes |
| meiosis 1 | crossing over during prophase one and pairs of chromosomes lining up during metaphase on |
| meiosis 2 | chromosomes are seperated and the result is 4 new cells |
| diploid | cell with 2 sets of chromosomes symbolized by 2n |
| haploid | cell with 1 set of chromosomes symbolized by n |
| homologous chromosomes | matching pairs of chromosomes, one set from mom other from dad |
| somatic cell | body cell, diploid |
| gamete | sex cells, haploid |
| oogenesis | formation of sperms, meiosis |
| karyotype | arrangement of chromosomes according to size to determine any possible disorder |
| monosomy | one of a pair of homologous chromosomes |
| trisomy | three of a pair of homologous chromosomes |
| sex chromosomes | 23rd pair xx-female xy-male |