powerpoint 1 -- Meiosis and Sexual Life Cycles

powerpoint 1 -- Meiosis and Sexual Life Cycles - Meiosis...

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Meiosis and Sexual Life Cycles Meiosis is the basis of sexual reproduction Outline: 1. Key concepts 2. Heredity 3. Asexual and sexual reproduction 4. The roles of meiosis in life cycle 5. Life cycles 6. Meiosis 7. Origins of genetic variation 8. Key terms 9. Conclusions Key Concepts: 1. Heredity is the transmission of traits from one generation to the next. 2. Clone – a group of genetically identical individuals produced by asexual reproduction 3. The fusion of gametes called fertilization or syngame 4. Meiosis is the basis of sexual reproduction 5. Sexual reproduction dominates the life cycle of nearly all animals 6. Crossing over, random segregation, and random fertilization contributes to variation in traits among offsprings Animal Life Cycle: Fungus Life Cycle:
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Hu man Life Cycle: Three sexual life cycles differing in the timing of meiosis and fertilization (syngamy):
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The process of meiosis: DNA replication occurs in interphase prior to meiosis. Meiosis I:
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This note was uploaded on 03/25/2009 for the course BIO 311D taught by Professor Reichler during the Spring '08 term at University of Texas.

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powerpoint 1 -- Meiosis and Sexual Life Cycles - Meiosis...

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