Linkage and Genetic Mapping in Eukaryotes.ppt

Linkage and Genetic Mapping in Eukaryotes.ppt - BIO 325...

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Unformatted text preview: BIO 325 Genetics Lectures 7 and 8 Linkage and Genetic Mapping in Eukaryotes Of all that is good, sublimity is supreme. Succeeding is the coming together of all that is beautiful. Furtherance is the agreement of all that is just. Perseverance is the foundation of all actions. I Ching Chromosomes consist of more than one gene, typically many hundreds to a few thousand. Linkage and Crossing Over Chromosomes consist of more than one gene, typically many hundreds to a few thousand. The term linkage is use to indicate that 1) two genes that are located on the same chromosome, and 2) genes that are close together tend to be transmitted from parent to offspring as a unit, which has an influence on inheritance patterns. Linkage and Crossing Over Chromosomes are often called linkage groups, because the genes on a chromosome are physically connected to one another. Linkage and Crossing Over Chromosomes are often called linkage groups, because the genes on a chromosome are physically connected to one another. Genes that are far apart on a chromosome may assort independently due to crossing over. Linkage and Crossing Over Chromosomes are often called linkage groups, because the genes on a chromosome are physically connected to one another. Genes that are far apart on a chromosome may assort independently due to crossing over. In humans there are 22 autosomal linkage groups, an X linkage group, and a Y linkage group. Linkage and Crossing Over Chromosomes are often called linkage groups, because the genes on a chromosome are physically connected to one another. Genes that are far apart on a chromosome may assort independently due to crossing over. In humans there are 22 autosomal linkage groups, an X linkage group, and a Y linkage group. When geneticists follow traits they rely upon dihybrid (two- factor) and trihybrid (three-factor) crosses. Linkage and Crossing Over Crossing over may alter linkage of genes. Linkage and Crossing Over Crossing over may alter linkage of genes. The bivalent chromosomes consist of two homologous chromosomes with a pair of sister- chromatids each. Linkage and Crossing Over Genetic recombination by crossing over can produce new combinations of alleles on chromosomes. Linkage and Crossing Over Genetic recombination by crossing over can produce new combinations of alleles on chromosomes. The cells that contain the new allelic combinations are called nonparental or recombinant cells. Linkage and Crossing Over Genetic recombination by crossing over can produce new combinations of alleles on chromosomes. The cells that contain the new allelic combinations are called nonparental or recombinant cells. The cells that contain the original combination of alleles are called parental or nonrecombinant cells....
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This note was uploaded on 05/19/2011 for the course BIO 325 taught by Professor Saxena during the Spring '08 term at University of Texas at Austin.

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Linkage and Genetic Mapping in Eukaryotes.ppt - BIO 325...

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