2. Mendelism 08312010

2. Mendelism 08312010 - 2. Mendelism 08/31/10 Mendel has 7...

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2. Mendelism 08/31/10 Mendel has 7 different characteristics / traits he looked at o Round or wrinkled ripe seeds o Yellow or green seed interiors o Green or yellow unripe pods o Purple or white petals o Inflated or pinched ripe pods o Axial or terminal flowers o Long or short stems Ratio close to 3:1 Cross fertilized the peas. He started experiment with inbred line, homozygous He looked at statistics and randomness Studied 1 trait at a time Then 2 traits at a time Quantitiative trait e.g. height Many contributing and non contributing alleles 1 st part of law Segregation of alleles i.e. meiosis Each individuals carries 2 genes Mendel recognized genetic varients i.e. alleles Tt alleles T = tall phenotype t = dwarf phenotype found on some chromosomes homozygous dominant TT heterozygous Tt homozygous recessive tt he conseptualized that an individual could have heterozygous Tt allele test cross with homozygous recessive Tt x tt gives 50: 50 ratio
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This note was uploaded on 02/17/2012 for the course BIO 1421 taught by Professor Farr during the Fall '08 term at Texas State.

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2. Mendelism 08312010 - 2. Mendelism 08/31/10 Mendel has 7...

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