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13 Cards in this Set

  • Front
  • Back
Genome
An organisms complete set of DNA
Histones
Small proteins that the DNA molecule wraps tightly around
Trisomy 21
Condition when a perosn has three number 21 chromosomes
Down Syndrome
Result of Trisomy 21
Nondisjunction
Pair of homologus chomosomes or sister chromatids fail to separate during meiosis
Duplication
When a part of a chromosome is repeated
Deletion
When a part of a chromosome is lost
Inversion
When a part of a chromosome is reversed
Translocation
Whne a portion of a chromosome attaches to a non-homologoues chromosome
Transposons
"Jumping Genes", single genes changing their position on the chromosome
Pedigree
Traces the occurence of a trait in a family
Carrier
Individual with one copy of the allele for a recessive disorder who does not show symtoms
Genetic Counsler
Individual trained to collect and interpret family histories of genetic disorders