prelab5

prelab5 - 2. In 1903, Walter Sutton and Theodore Boveri...

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Prelab for October 23-26 1. Mitosis has been called an equational division, while meiosis is often termed a reductional division. Define these terms, and show how these two forms of cellular division are fundamentally different. Mitosis is the process in which a cell duplicates itself and creates two identical daughter cells. It’s considered an equational division because the division results in the product of two nuclei, which contain identical chromosomes. It results in equal distribution of cytoplasm and cellular organelles into the daughter cells. Meiosis is the process by which one diploid cell divides into four haploid cells called gametes. The gametes contain half the chromosomes of the parent cell, which could be why it is considered a reductional division. Mitosis keeps the balance in a population while meiosis creates variation.
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Unformatted text preview: 2. In 1903, Walter Sutton and Theodore Boveri independently realized that the process of meiosis could explain Mendels rules of particulate inheritance. How might meiosis hold the key to variation in a population? It could explain variation in a population because it takes genetic information from both parent cells to create a gamete. The cell is not an identical replica of the parents but do have similar characteristics. 3. Which phase of the cell cycle passes most quickly? Which phase is slowest (especially in multicellular organisms)? Why might it be necessary to have a separate S phase included in the cell cycle? Mitosis is the cycle that passes the most quickly. The slowest cycle is interphase cycle. It is necessary to have a separate S phase because it is during this phase that the chromosomes are replicated....
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This note was uploaded on 04/29/2008 for the course RH 101 taught by Professor Emery during the Spring '08 term at BU.

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