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Chapter 7-3

Human Genetics

QuestionAnswer
mutations change in the DNA of a gene or chromosome resulting from incorrect copying or damage
genetic disorders the harmful effects produced by mutated genes
sickle cell anemia A condition caused by a mutated allele that produces a defective form of a protien hemoglobin. This is an example of a recessive genetic disorder.
hemoglobin Component of red blood cells that binds with and carries oxygen throughout the body.
hemophilia This is another recessive genetic disorder (what's another one?) that impairs the blood's ability to clot and can cause excessive and prolonged bleeding.
sex-linked trait A trait that is determined by a gene found only on the X chromosome.
pedigrees Family history or traits recorded over generations.
phenylketonuria (PKU) This is a genetic disorder in which an individual lacks an enzyme that co verts the amino acid phenylalanine into the amino acid tyrosine. It results in retardation if not treated in early life.
Created by: HEBaker
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