Independent Assortment and Segregation Describe independent assortment and segregation and explain the relevance of these to variation.

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Presentation transcript:

Independent Assortment and Segregation Describe independent assortment and segregation and explain the relevance of these to variation.

Variation in Meiosis Meiosis provides variation – it produces 4 unique sex cells. The processes WITHIN Meiosis that produce variation are: 1. Independent Assortment 2. Crossing Over 3. Segregation

Independent Assortment Independent assortment is a basic principle of genetics developed by a monk named Gregor Mendel in the 1860'sGregor Mendel This principle states that the alleles for a trait separate when gametes are formed.alleles Worksheet Animation ▫ /content/independentassortment.htmlhttp:// /content/independentassortment.html

Segregation the paired alleles of the genes, which determine the traits of an organism, are segregated (separated) during gamete formation so that only one allele passes into each gamete. id=allele_diploidy_haploidy_heterozygote_homozygote _homologous_chromosomes_phenotype_genotype_gen e_locus_meiosis_dominant_alleles_recesive_alleles_te st_cross_page_3&from=searchhttp:// id=allele_diploidy_haploidy_heterozygote_homozygote _homologous_chromosomes_phenotype_genotype_gen e_locus_meiosis_dominant_alleles_recesive_alleles_te st_cross_page_3&from=search

Segregation occurring Who can spot the crossing over happening?

WB p90 In your book – answer- -How does Segregation provide variation? -How does Independent Assortment provide variation?