|Chapter 7-1, 7-2 Reading Guide||Name _______________________|
1. Meiosis is a form of cell division that [ halves / doubles ] the number of chromosomes when forming specialized cells.
2. Homologous chromosomes are [ different / similar ] in size, shape and genetic content.
3. Crossing-over occurs when portions of a chromatid on one homologous chromosome are broken and [ lost / exchanged ].
4. During telophase II of meiosis, the spindle breaks down and the cell undergoes [ mitosis / cytokinesis ]
5. The random distribution of homologous chromosomes during meiosis is called [independent assortment / crossing-over ]
6. The pace of evolution increases as the level of genetic variation [ increases / decreases ]
7. Animals with both male and female reproductive organs are called [hermaphrodites / cross-overs]
8. The process by which gametes are produced in females is called [ ovum / oogenesis ]
9. Polar bodies will not [ divide / survive ]
10. In women, egg development begins [ before birth / during puberty ]
11. An organism that is genetically identical to its parent is called a [ clone / asexual]
12. In sexual reproduction [ one / both ] parents contribute genetic information.
13. A hydra can reproduce asexually by [ budding / fragmenting ]
14. Asexual reproduction allows organisms to produce [ many / few ] offspring.
15. The pairing of homologous chromosomes during meiosis may have originally been a way to [ repair / copy ] DNA.