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genetics
chap 4
16
Biology
Undergraduate 1
05/07/2011

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Term
PKU disease
Definition
Metabolic disease caused by inability to breakdown the amino acid phenylalanine.
Term
albinism
Definition
Inability to produce pigment melanin
Term
Rh factor
Definition
A blood protein which is inherited as a dominant trait and can cause erythroblastosis fetalis.
Term
sex-influenced trait
Definition
Gene expression is different in males & females, Ex: baldness
Term
red-green colorblindness
Definition
X-linked trait that affects 8% of male population, lack of vision protein--opsins.
Term
Sickle Cell Anemia
Definition
Most frequent genetic disease found among individuals of African descent, 1 in 12 carrier.
Term
incomplete dominance
Definition
Inheritance pattern of roan shorthorn cattle and of pink 4 o'clocks.
Term
Kleinfelter syndrome
Definition
Genotype: XXY
Term
SCID
Definition
X-linked trait known as "Bubble Boy" Disease, males lack T and/or B lymphocytes.
Term
Down syndrome
Definition
Trisomy 21
Term
Turner syndrome
Definition
The only viable human monosomy
Term
hemophilia
Definition
Free-bleeders disease, X-linked
Term
co-dominance
Definition
Type of inheritance expressed by A & B of the A,B,O blood group antigens
Term
Iron Overload Disease
Definition
Hemochromatosis, 1 in 8 is a carrier, 1 in 200 affected
Term
sex-limited trait
Definition
Typically expressed in only 1 sex, Ex: beard growth
Term
cystic fibrosis
Definition
Excess production of mucus by exocrine glands
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