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12 Cards in this Set
- Front
- Back
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cytogenetics
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study of chromosomes
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karyotype
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indivual's chromosome composition
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pedigree
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shows inheritamce patterns, transmissition of genetic traits within a family over generations.
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polyploidy
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presence of mulitple sets of chromosomes. mostly in plants. arises from the failure of chromosomes to seperate during meiosis or fertilizatoin by more than 1 sperm.
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aneuploidies
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abnormalities involving the presence of a single xtra chromosome or the absence of a chromosome.
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trisomy
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person has an xtra chromosome
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monosomy
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individual lacks one member of a pair of chromosomes.
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nondisjunction
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abnormal meiotic division where the chromosomes fail to seperate at anaphase.
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down syndrome
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trisomic for chromosome 21.
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translocation
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chromosome fragment breaks off & attaches to a nonhomologous chromosome.
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reciprocal translocation
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2 nonhomologous chromosomes exchange parts.
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deletion
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part of a chromosome is missing
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