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Diploid and haploid phases of the life cycle

Diploid and haploid phases of the life cycle. Results from Mendel’s experimental monohybrid cross. Punnett square Segregation of alleles. Prediction for Mendel’s experimental dihybrid cross. Dihybrid cross results. Independent assortment of loci. Meiosis.

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Diploid and haploid phases of the life cycle

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  1. Diploid and haploid phases of the life cycle

  2. Results from Mendel’s experimental monohybrid cross Punnett square Segregation of alleles

  3. Prediction for Mendel’s experimental dihybrid cross

  4. Dihybrid cross results Independent assortment of loci

  5. Meiosis At which stage do daughter cells become haploid? Where do segregation of alleles and independent assortment of loci occur?

  6. Independent assortment of loci on different chromosomes Minimum number of gamete types = 2n In humans, n = 23 Gamete types from mother: 8,388,608 Gamete types from father: 8,388,608 Maximum chance that two children from the same parents will be identical: 1/70 trillion

  7. Mendelian genetics explained by meiosis Segregation of alleles Independent assortment of loci

  8. Mitosis vs. meiosis

  9. Linkage NON-independent assortment of loci

  10. RecombinationCrossing over Re-shuffles linked alleles

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