chromosomes as somatic cells. (All of our gametes have 23 chromosomes) Eukaryotic chromosomes consist of chromatid‚ a complex of DNA and protein that condenses during cell division. Eukaryotic cell division consists of: — Mitosis‚ the division of the nucleus — Cytokinesis‚ the division of the cytoplasm Gametes and spores are produced by a variation of cell division called meiosis.
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CHAPTER 13 OBJECTIVES The Basis of Heredity 1. Explain in general terms how traits are transmitted from parents to offspring. An organism’s traits and appearance are controlled by specific forms of proteins contained in DNA. When gametes are formed‚ the male and female parents pass along their DNA into their respective gametes. Fertilization fuses the gametes and combines the genetic contribution of each parent into the new offspring. 2. Distinguish between asexual and sexual reproduction
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Sordaria Fimicola. 28 October 2008. 2. Biology 8th Edition. Campbell‚ Neil A. and Jane B. Reece. Prentice Hall‚ c2005.ISBN 0805367772. Pearson Education 800.848.9500. 3. Bio 325 Genetics Lab: Tetrad analysis in Sordaria fimicola. 30 October 2008 4. Mitosis and Meiosis Lab. 31 October 2008
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DIFFUSION= The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion. OSMOSIS= Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane. SELECTIVE PERMEABLE MEMBRANE=a membrane (as a cell membrane) that allows
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Rio BIO ANSWERS Ch 1 Quiz 1. regulation 2. Atom‚ molecule‚ organelle‚ cell‚ tissue‚ organ 3. Biosphere 4. Maintain a relat 5. 3 6. plantae 7. protista 8. protist will contain organelles 9. natural selection 10. modern 11. natural 12. artificial 13. theory must be supported by eveidence 14. be falsible 15. is the control group 16. a testable 17. observation 18. bright males 19. a function 20. observation CHAP 2 QUIZ 1. electrons 2. atom 3. A and B 4. electron 5. 2 6. it gains or loses electrons
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Rapid growth of the cell‚ metabolic activity. S- Synthesis‚ DNA replication. G2- Getting ready for cell division. Centrioles replicate Mitosis and Cell Division Function- To grow repair and maintain the cells in the body along with the reproduction of those cells. Results- Two identical daughter cells form from the parent cell. Phases of Mitosis Prophase- Nucleus disappears‚ chromatin forms into chromosomes. Centrioles start to move to outer poles. Spindle fibers start to form Metaphase-
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Unit 2. Chapters 9-16. Cell Processes 1. Cellular Respiration‚ Photosynthesis‚ Cell Cycle‚ Mitosis‚ Meiosis‚ & Genetics. Note A: All work must be hand-written‚ including charts & diagrams. Note B: each answer requires more than one sentence & use diagrams whenever possible; failure to use diagrams will result in less points. Chapter 9 Outline 1) Principles of Energy Conservation a) Cellular respiration and fermentation are catabolic(energy – yielding) pathways b) Cells must recycle the ATP
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Cell Biology _ will cover Chapters 7‚ 8 and supplements!! _ study guide available on moodle 14 _ turn in NEWS assignment _ take notes: the cell cycle _ begin lab: Mitosis _ use image provided to tally cells in different phases of the cell cycle _ complete Mitosis Sequencing Activity on the back of the graphic organizer _ read pages 217 – 219 _ What is cancer? _ What causes cancer? _ read supplemental handout: cancer _ What is a tumor? _ What is the
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divisions: meiosis I serves to divide the two versions of each chromosome; and meiosis II separates the two replicas of each chromosome. B. Meiosis I 1. Meiosis is similar to mitosis‚ except that it involves two divisions‚ meiosis I and meiosis II‚ and the resulting cells are haploid‚ rather than diploid like those produced by mitosis. 2. Also‚ a phenomenon called crossing over occurs during prophase I of meiosis I when pieces of nonsister chromatids exchange places to promote new genetic combinations
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division‚ and the replication of centrosomes is completed. The mitotic phase of the cell cycle‚ which results in the formation of two new cells‚ consists of a nuclear division‚ which is called mitosis‚ and a cytoplasmic division‚ which is called cytokinesis‚ to form two identical cells. The process of mitosis results in the exact partitioning of genetic information. During prophase‚ the
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