Karyotype Cell in metaphase. Diploid (2n) Haploid (1n) Allele Homologous Pair Gene Locus Tetrad Sister chromatids.

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Presentation transcript:

Karyotype Cell in metaphase. Diploid (2n) Haploid (1n) Allele Homologous Pair Gene Locus Tetrad Sister chromatids

Meiosis Reduction Division- each cell contains half the genetic material of parent 2n  1n Diploid  Haploid Genetic Shuffling- Crossing over Independent Assortment

Meiosis How does meiosis give genetic diversity? 1.Crossing over Homologous chromosomes exchange pieces Example Chromosomes Before Crossing-Over ABCDEF a b c d e f After the Process of Crossing-Over ABCd e fABCDe f a b c DEFa b c d EF

Meiosis Each gamete contains half the original pair Each of the 23 pairs assort independently of each other Where chromosome 1 goes does not dictate the movement of chromosome 21.