CH 9---Genetics - Genetics Genetics Gregor Mendel Gregor...

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Unformatted text preview: Genetics Genetics Gregor Mendel Gregor Mendel garden peas F1 (filial) generation ALL PURPLE ALL PURPLE FLOWERS X F1 F1 PURPLE AND WHITE FLOWERS!!! WHAT?!?! F2 Hmm… Hmm… This leads me to form some hypotheses… Genes vs. Alleles Genes vs. Alleles Gene = flower color Allele = purple or white Chromosome from Mom Chromosome from Dad Purple Purple flower gene White flower gene Homozygous vs. Heterozygous Purple Purple flower gene White flower gene P p GENOTYPE PP = homozygous dominant PP = homozygous dominant PHENOTYPE purple Pp = heterozygous purple pp = homozygous recessive Punnett-square white Mendel’s Principle of Mendel’s Principle of Segregation Gene = tongue rolling Gene = tongue rolling Alleles = rolling and non­rolling GENOTYPE RR = homozygous dominant RR = homozygous dominant PHENOTYPE roller Rr = heterozygous roller rr = homozygous recessive Punnett-square non­roller Mendel’s Principle of Mendel’s Principle of Independent Assortment Dihybrid cross Dihybrid cross roller non­roller normal ears vulcan ears Probabilities Probabilities Test Cross Test Cross Shingadoodles Shingadoodles G green eyes g white eyes H have hair h hairless Recessive Disorders Recessive Disorders Albinism Cystic Fibrosis Tay­Sachs disease Dominant Disorders Dominant Disorders Achondroplasia Huntington’s disease Incomplete Dominance Incomplete Dominance Incomplete Dominance Incomplete Dominance Codominance Codominance Blood Type A B AB O AA, AO BB, BO AB OO Gene Linkage Gene Linkage Gene Linkage Gene Linkage Sex­Linked Genes Sex­Linked Genes XX Female ­ XY Male ­ Sex­Linked Disorders Sex­Linked Disorders Red­green color blindness Hemophilia Pleiotropy Pleiotropy Pleiotropy Pleiotropy Polygenic Inheritance Polygenic Inheritance ...
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This note was uploaded on 11/17/2010 for the course BIO bio 101 taught by Professor C during the Spring '05 term at Diablo Valley College.

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