Chapter_12_to_post

Chapter_12_to_post - Genetic Symbolism 1. Often use initial...

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Genetic Symbolism 1. Often use initial letter of dominant allele a. Capital letter represents dominant b. Lower case of same letter represents recessive 2. If purple flower dominant to white… a. “P” represents allele for purple b. “p” represents allele for white
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Genotype vs Phenotype 1. Genotypes a. PP = homozygous for purple flower b. pp = homozygous for white flower c. Pp = heterozygous for flower color 2. Phenotype from genotype: a. PP = purple flower b. Pp = purple flower c. pP = purple flower d. pp = white flower
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How are Single Traits Inherited?
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pp homozygous recessive Homozygous Dominant X Homozygous Recessive P p P p Purple Parent PP homozygous dominant White Parent sperm nuclei egg nuclei sperm nuclei egg nuclei
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Pp Pp Homozygous Dominant (PP) X Homozygous Recessive (pp) Purple F 1 P p sperm nucleus egg nucleus + p P egg nucleus sperm nucleus +
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Pp (purple flower) X Pp (purple flower) F 1 cross F 2 offspring PP 25% Pp 25% pp 25% Pp 25% P P P P p p p p Sperm eggs
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P p 1(25%) White 3 (75%) Frequencies Phenotypes Genotypes
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This note was uploaded on 04/07/2011 for the course BIOL 1001 taught by Professor Minor during the Spring '08 term at LSU.

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Chapter_12_to_post - Genetic Symbolism 1. Often use initial...

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