MENDEL - Gregor Mendel and The Origin of Modern Genetics...

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Genetics Gregor Mendel and The Origin of Modern Genetics Biological Anthropology Diane C.Freedman
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Genetics MENDEL'S GENETIC PRINCIPLES (1866) Mendel was an Austrian monk who lived from 1822-1884. He studied inheritance patterns of pea plants in his monastery garden.
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Genetics PARTICULATE INHERITANCE inherited traits are passed down by discrete particles that maintain individuality they do not blend
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Genetics PARTICULATE INHERITANCE Before Mendel, parental traits were thought to blend together like a liquid.
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Genetics PARTICULATE INHERITANCE Mendel inferred that traits were carried on particles, even though he could not see them. We now call them genes.
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Genetics SEGREGATION Hereditary factors separate in sex cell formation; when sex cells form a zygote, a new combination of factors is produced. This happens during meiosis.
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Genetics INDEPENDENT ASSORTMENT Inheritance patterns of differing traits are independent of one another, so that new patterns present in neither parent are possible. Sorting happens in the crossing over process of meiosis.
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Genetics crossing over: in meiosis, interchange of sections of homologous (look-alike) chromosomes
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Genetics R=smooth r=wrinkled T=yello w t=green Shape and color of peas
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Genetics How many individuals of each phenotype for the two traits are produced?
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This note was uploaded on 09/21/2011 for the course SOCIAL SCI 101 taught by Professor Staff during the Spring '11 term at Community College of Philadelphia.

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MENDEL - Gregor Mendel and The Origin of Modern Genetics...

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