Reproduction and Chromosome Transmission

During meiosis the division of the cytoplasm is

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Unformatted text preview: gg cell. During meiosis the division of the cytoplasm is asymmetric and produces polar bodies. The larger cell is called the secondary oocyte, and represents the cell that is released during ovulation. If the secondary oocyte is fertilized, it completes meiosis II. In the second cytokinesis there is again an unequal division of the cytoplasm, producing another polar body. The similarities of sexual reproduction amongst organisms (animals, fungi, protists, plants) far outweigh the differences. There is always meiosis and fertilization. Gametes are always haploid, and zygotes are always diploid. 7 The Chromosome Theory of Inheritance and Sex Chromosomes General information (Table 3.1). The relationship between chromosomal transmission detailed in the previous sections and the patterns of inheritance described by Mendel is called the chromosomal theory of inheritance. Mendel understood the transmission of traits from parents to offspring. Scientists such as Nägeli and Weismann believed that the patterns of inheritance described by Mendel were the result of a substance within th...
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This note was uploaded on 05/19/2011 for the course BIO 325 taught by Professor Saxena during the Spring '08 term at University of Texas.

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