Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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
|