'Recombinant gametes' diaporamas de présentation

Linkage -Genes on the same chromosome are called linked

Linkage -Genes on the same chromosome are called linked. Human -23 pairs of chromosomes, ~35,000 different genes expressed. - average of 1,500 genes/chromosome. Following Meiosis Parental chromosomal types - complete linkage and no crossing over.

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Recombination & Genetic Analysis

Recombination & Genetic Analysis. -The maximum recombination frequency -Quiz section 5 revisited -Genetic vs. Physical maps. 58.2 cM. b + sp +. b sp. 21. 25. P. 25. 21. 25. 29. R. 25. 29. Test your understanding.

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Yellow dots mark the locus of a specific gene on a homologous pair of human chromosomes

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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.

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POST MENDELIAN GENETICS

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Linkage Mapping

Linkage Mapping. Physical basis of linkage mapping Mapping by the 2-factor testcross method Mapping by the 3-factor testcross method. A. Physical Basis. If two genes are located on the same chromosome, their alleles can recombine only when there is crossing over during meiosis

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Linkage genes and genetic recombination

TABUK UNIVERSITY Faculty of Applied Medical Sciences Department of Laboratory Technologies. Linkage genes and genetic recombination. AY: 1433-1434/2012-2013 Lecture 5.

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DATA ANALYSIS

DATA ANALYSIS. Module Code: CA660 Lecture Block 4. Examples using Standard Distributions/sampling distributions. Background Recombinant Interference

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Genetics

Genetics. Review. Involves several different genes for one trait like eye color, skin tone and color, height (humans), wheat kernel color These are called Polygenes. Polygenic Inheritance. Skin color has three alleles: ABC for dominant and abc for recessive

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Linkage and Gene Mapping

Linkage and Gene Mapping . Locus = physical location of a gene on a chromosome Homologous pairs of chromosomes often contain alternative forms of a given gene = alleles Different alleles of the same gene segregate at meiosis I Alleles of different genes assort independently in gametes

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I II III

Deafness and red-green colorblindness in humans are determined by recessive alleles at X-chromosome loci that are 32 map units apart. Consider the pedigree shown below. What are the possible genotypes for individual III-3 ? What is the probability for each possible genotype?

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