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Human genetics

Patterns of Heredity

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Biology
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Genetics
Biology
Classical genetics
Philosophy of biology
Dominance
Sex linkage
Zygosity
Recessive
Human genetics
genotype
heredity
Mendelian inheritance
health

Patterns of Heredity and Human Genetics Mendelian Inheritance of Human Traits Pedigree: a graphic representation of genetic inheritance A pedigree uses symbols that identify males and females, family relationships, individuals affected by a trait being studied. Carrier: an individual who carries a recessive trait that is not expressed (heterozygous) Simple Recessive Heredity Most genetic disorders are caused by recessive alleles. Cystic Fibrosis Most common fatal genetic disorder in US among people of European descent (1/28 carry, 1/2500 affected) Cells in respiratory and digestive system produce huge quantities of mucus Catch infections easily and suffocate Usually die before reach 20?s Tay-Sachs Disease

Biology 2

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Biology
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Classical genetics
Biology
Earlobe
Cleft chin
anatomy
Hair
Cleft
Recessive
Dominance
Human genetics

Feature Trait Total Trait Total Earlobes Free Earlobes 17 Attached Earlobes 3 Hair on Knuckles Hair present between second and third knuckle of fingers 17 No hair present between second and third knuckle of fingers 3 Hair Line Widow's Peak 6 Straight Hair Line 14 Hair Texture Curly Hair 11 Straight Hair 9 Chin Shape Cleft Chin 6 No cleft Chin 14 Family Member Earlobes Hair on knuckles Hair Line Hair Texture Chin Shape Father Free Yes Widow's Peak Straight No Cleft Mother Free Yes Straight Curly No Cleft Son Attached Yes Straight Straight No Cleft Daughter Free Yes Straight Curly No Cleft Feature Trait % Trait % Earlobes Free Earlobes 85% Attached Earlobes 15% Hair on Knuckles
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