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heredity
unit 2
| Term | Definition |
|---|---|
| DNA | deoxyribonucleic acid, a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live. |
| chromosomes | in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein. |
| cell cycle | the life of a cell. |
| interphrase | the period of the cell cycle during which activities such as cell growth and protein synthesis occur without visible signs of cell division |
| mitosis | in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes. |
| cytokinesis | the division of cytoplasm of a cell |
| homologous chromosomes | chromosomes that have the same sequence of genes and the same structure |
| meiosis | a process in cell division during which number of chromosomes decreases to half the original number by two divisions of the nucleus which results in the production of sex cells |
| asexual reproduction | reproduction that does not involve the union of sex cells and in which one parent produces offspring that are genetically identical to the parent |
| sexual reproduction | reproduction in which the sex cells come from two parents unite to produce offspring that share traits from both parents |
| fertilization | the union of a male and female gamete to form a zygote |
| heredity | the passing of genetic materials from parent to offspring |
| gene | one set of instructions for an inherited trait |