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;
26 Cards in this Set
- Front
- Back
|
Mutations |
Changes in heredity material |
|
|
Chromosomal Mutations |
Large changes in chromosome amount or structure |
|
|
Gene Mutations |
Change in the chemical nature of DNA by the addition, deletion or substitution of one base |
|
|
Mutagens |
Things that cause mutations |
|
|
Somatic Mutations |
occurs in body cells |
|
|
germ mutations |
occurs in gametes |
|
|
Nondisjunction |
Failure of chromosomes to separate during meiosis |
|
|
Aneuploidy |
Abnormal chromosome number |
|
|
polyploidy |
Too many chromosomes |
|
|
Trisomy |
2n+1 |
|
|
Monoploidy |
Too few chromosomes |
|
|
Translocation |
exchange of segments between nonhomologuos chromosomes |
|
|
Insertion/duplication |
chromosome present more than once |
|
|
Deletion |
loss of a chromosome: may reattach or remain a fragment |
|
|
Inversion |
Chromosome breaks and reattaches upside down; reversed |
|
|
Down Syndrome |
Trisomy 21 |
|
|
Klinfelters Syndrome |
Trisomy of the sex chromosome XXY |
|
|
Turners syndrome |
monosomy of the sex chromosome X |
|
|
XYY Male |
trisomy of the sex chromosome XYY |
|
|
Huntington's Disease |
A degenerative nervous disorder |
|
|
Albinism |
Lack of melanin |
|
|
Cystic Fibrosis |
Over production of mucus in lungs |
|
|
Sickle Cell Anemia |
Red blood cells are sickle shaped and can not carry oxygen efficiently |
|
|
Tay-Sach's Disease |
Lack of enzyme that breaks down lipids in the brain |
|
|
PhenyIktonura |
PKU- caused by a lack of an enzyme that changes phenylalaline to tyrosine |
|
|
Hemophilia |
recessive sex-linked disorder carried on the X chromosome: failure of blood to clot |
