Chapter 3 independent assortment

Chapter 3 independent assortment - Chapter 3 Independent...

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Click to edit Master subtitle style 5/29/11 Chapter 3 Independent Assortment of Genes Suggested Problems: #1, 4, 6, 8, 10, 13, 14, 16, 17, 19, 20, 21, 24, 25, 29, 30, 34, 35a, 37, 39, 41, 46
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5/29/11 The Green Revolution in agriculture: Food production doubled 1960-2000
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5/29/11 Hard Red Calcutta X Red Fife (early-ripening Indian wheat variety) (good grain quality) Charles Saunders (?? how many genes involved??) Marquis wheat Central prairies are now called the “breadbasket of Canada”. Wheat varieties
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5/29/11 Combining different mutant lines together: 1. When the genes of interest are on different chromosomes (this chapter) 1. When the genes of interest lie on the same chromosome (Chapter 4)
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5/29/11 Crossing two pure lines together green (y/y) X wrinkled (r/r) (yellow is wild-type) (round is wild-type) R/R; y/y X r/r; Y/Y (green, round) (yellow, wrinkled) Symbols: Two alleles of a gene pair are separated by a slash. Genes pairs on different chromosomes separated by a semicolon. Genes on the same chromosome are written adjacent with no punctuation.
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5/29/11 Mendel’s breeding program that produced a 9 : 3 : 3 : 1 ratio
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5/29/11 Mendel’s breeding program that produced a 9 : 3 : 3 : 1 ratio
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5/29/11 Mendel’s breeding program that produced a 9 : 3 : 3 : 1 ratio
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5/29/11 Mendel’s dihybrid cross produced a 9 : 3 : 3 : 1 ratio
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5/29/11 What are the gametes from a dihybrid cross?
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5/29/11 Punnett Square illustrates the 9:3:3:1 ratio
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5/29/11 Punnett Square illustrates the 9:3:3:1 ratio
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5/29/11 Punnett Square illustrates the 9:3:3:1 ratio
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5/29/11 Punnett Square illustrates the 9:3:3:1 ratio
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5/29/11 Punnett Square illustrates the 9:3:3:1 ratio
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5/29/11 Dihybrid Cross 9:3:3:1 ratio is actually two independent 3:1 ratios (we will prove this shortly) led to Mendel’s law of independent assortment : “different gene pairs assort independently during gamete formation” modern corollary: genes on different chromosomes assort independently
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Chapter 3 independent assortment - Chapter 3 Independent...

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