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Lecture Notes 6

Lecture Notes 6 - Lecture 6 Biosc 0350 Genetics Lecture 6...

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Lecture 6 1/24/2008 1 Biosc 0350 Genetics Lecture 6 - Chromosomal Theory of Inheritance (1) l Chromosomes Mitosis - nuclear division producing daughter cells that have identical genetic material as the original Meiosis - two nuclear divisions producing gametes (or sexual spores) that have half the genetic material of the original 1/24/08 Martens. Biosc 0350, University of Pittsburgh 2 Anatomy of a chromosome Hartwell et al , 3rd ed. Fig. 4.3
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Lecture 6 1/24/2008 2 1/24/08 Martens. Biosc 0350, University of Pittsburgh 3 Cells can have one or two sets of chromosomes Hartwell et al , 3rd ed. Fig. 4.2 1/24/08 Martens. Biosc 0350, University of Pittsburgh 4 The number of chromosomes vary from species to species. 46 23 Humans 78 39 Dogs 94 47 Goldfish 22 11 Giant sequoia trees 28 14 Macaroni wheat 14 7 Peas 12 6 Drosophila virilus 10 5 Drosophila obscura 8 4 Drosophila melanogaster 2n n Organism
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Lecture 6 1/24/2008 3 1/24/08 Martens. Biosc 0350, University of Pittsburgh 5 Chromosome can vary in size, shape, and banding patterns. Homologous chromosomes (homologs) can be identified based on similar size shape and banding pattern Human chromosomes If this person is heterozygous for dominant Hemophelia A gene # of copies of hemophila gene? Hartwell
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Lecture Notes 6 - Lecture 6 Biosc 0350 Genetics Lecture 6...

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