LEQ: How do the events of meiosis account for Mendel ’ s laws?. 9.18. Chromosome Theory of Inheritance. Genes occupy a specific location on a chromosome Chromosomes undergo segregation and independent assortment.
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Genes occupy a specific location on a chromosome
Chromosomes undergo segregation and independent assortment
* Segregation occurs when homologous chromosomes are separated during anaphase I.* Independent Assortment occurs when homologous chromosomes line up together during metaphase I.
9.19 and 9.20
Crossing over occurs. Chromatids with new gene combinations are referred to as recombinant chromatids.
The percentage of recombinants from a cross. In this example Morgan observed 17% recombination frequency.