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12 Cards in this Set

  • Front
  • Back
cytogenetics
study of chromosomes
karyotype
indivual's chromosome composition
pedigree
shows inheritamce patterns, transmissition of genetic traits within a family over generations.
polyploidy
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.
aneuploidies
abnormalities involving the presence of a single xtra chromosome or the absence of a chromosome.
trisomy
person has an xtra chromosome
monosomy
individual lacks one member of a pair of chromosomes.
nondisjunction
abnormal meiotic division where the chromosomes fail to seperate at anaphase.
down syndrome
trisomic for chromosome 21.
translocation
chromosome fragment breaks off & attaches to a nonhomologous chromosome.
reciprocal translocation
2 nonhomologous chromosomes exchange parts.
deletion
part of a chromosome is missing