BIOL 100 Lecture Notes - Lecture 10: G0 Phase, Cytokinesis, Covalent Bond
Document Summary
Biology 100 - lecture 10 - cell division. A mutation is defined as a change in a cell"s dna sequence as the mutation changes the encoding of the genes. A spontaneous mutation is due to abnormalities in cellular and other biological processes. Two examples of a spontaneous mutation are a loss of a base one strand or a mismatch of base pairs. An induced mutation is a result from contact with environmental agents that can alter the structure of the dna. These environmental agents that can alter the dna"s structure are called mutagens. Examples of induced mutations are carcinogens, x-rays, uv light, benzene, arsenic, and some viruses and bacteria. Animal cells can be classified as gametes or somatic cells. Gametes are sex cells that give rise to eggs and sperm. Mutations in gametes can be passed on to the offspring. Mutations in these cells will remain in the person"s body. A person"s cell are always rapidly dying and being replaced.