term1 Definition1term2 Definition2term3 Definition3
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Sickle Cell Disease
-Recessive
-Not sex linked
-African American descent
-Blood clumps, hard to breathe, coldness in hands/feet
-Genetic Advantage- if you have one copy if sickle cell allele you are usually healthy and resistant to malarist
Cystic Fibrosis
-European descent
-Symptoms : airways become clogged with thick mucus, hard to breathe
-Advantage- if heterozygous for CF you have advantage when living in cities with poor sanitation
Huntington Disease
-Dominant
-No
-No but starts taking place during middle age
-Mental deterioration
-No advantage
Colorbilindness
-Sex linked
-Males
-Can't see color
Down Syndrome
-has 3 chromosome 21
-mild to severe retardation and high frequency of certain birth defects
-if 2 copies of an autosomal chromosome fail to separate during meiosis, individual may be born with 3 copies of that chromosome
Turners Syndrome
-inherits only one X chromosome
-sterile
-nondisjunction of X chromosome
Klinefleters Syndrome
-extra X in males -- XXY
-nondisjunction gives extra X chromosome
Nondisjunction
When homologous chromosomes fail to separate
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