'Double crossovers' diaporamas de présentation

Genetic Mapping in a Three-Point Test Cross

Genetic Mapping in a Three-Point Test Cross. sc x ec 12 14 14 16 56/1008 x 100 = 5.6 mu. ec vg 235 ec + 243 ec vg 016 ec + 014 + + 241 + vg 233 + + 014 + vg 012 506 502. sc vg 235 sc + 243 sc vg 012 sc + 014 + + 241 + vg 233 + + 014 + vg 016

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Chapter 6

Chapter 6. Genetic Recombination in Eukaryotes. 31 January, 2 February, 2005. Linkage and genetic diversity. Overview. In meiosis, recombinant products with new combinations of parental alleles are generated by: independent assortment (segregation) of alleles on nonhomologous chromosomes.

583 views • 38 slides

Eukaryotic Chromosome Mapping

Eukaryotic Chromosome Mapping. Using Genetic Recombination to Estimate Distances Between Genes. Linked Genes. F1: Red eyes, Beige body RrBb. Independent Assortment vs. Gene Linkage. Example from Drosophila Red eyes, x Pink eyes Beige body Ebony body

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Chapter 7 Linkage, Crossing Over, and Chromosome Mapping in Eukaryotes

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Today Linkage & Recombination

Today Linkage & Recombination. Effects of Recombination in a Test Cross. P: AABB x aabb F1: AaBb Test Cross: AaBb x aabb Non-recombinants phenotypes: A-B- and aabb Recombinant phenotypes: A-bb and aaB-. Rate of recombination.

421 views • 32 slides

Eukaryotic Chromosome Mapping

Eukaryotic Chromosome Mapping. Using Genetic Recombination to Estimate Distances Between Genes. Linked Genes. F1: Red eyes, Beige body RrBb. Independent Assortment vs. Gene Linkage. Example from Drosophila Red eyes, x Pink eyes Beige body Ebony body

798 views • 30 slides

Review

Review. What is a gamete? Why do we need to know the gamete composition?. Aa 2 1 =2 AaBB 2 1 =2 AaBbCc 2 3 =8 AaBbCC 2 2 =4 We need to know the gamete composition so that we can insert them into the boxes in punnet square e.g # AaBbCc x AaBbCC. Testcross.

219 views • 12 slides

Lecture 8 Feb. 20, 2006

Lecture 8 Feb. 20, 2006. Genetic linkage Human pedigrees Tetrad analysis. There is much less recombination in heterochromatin compared to euchromatin. Genetic maps are based on % recombination. Physical maps are based on other methods such as gel electrophoresis or DNA sequencing.

362 views • 11 slides