Question | Answer |
ABO blood type | a classification system of multiple alleles to identify blood type |
Cystic fibrosis | an inherited condition caused by a defective gene that causes the secretions to become thick and sticky; the secretions plug up tubes, ducts and passageways, especially in the lungs and pancreas. |
Down's Syndrome | A human genetic disease resulting from having an extra chromosome on pair #21, characterized by mental retardation and heart and respiratory defects |
color blindness | the inability to distinguish colors and is an inherited sex |
hemophilia | genetic disorder that impairs the blood's ability to clot and can cause excessive bleeding |
sex-linked traits | An inherited trait, determined by a gene located on a sex chromosome X; in males. |
PKU | lackinf an an emzyme to break doewn the amoion acid, phenyalanine. Phenylalanine accumulates in blood and seriously impairs early neuronal development. The defect can be controlled by diet. |
karyotype | A method of organizing the chromosomes of a cell in relation to number, size, and type |
multiple allele | Typically, there are only two alleles for a gene in a diploid organism. The presence of multiple alleles is best illustrated by the ABO blood group system |
nondisjunction | n accident of meiosis or mitosis, in which both members of a pair of homologous chromosomes or both sister chromatids fail to move apart properly |
Pedigree | A family tree describing the occurrence of heritable characters in parents and offspring across as many generations as possible. |
Huntington's Disease | autosomal dominant, inherited adult |
Sickle Cell Anemia | a disease passed down through families in which red blood cells form an abnormal sickle or crescent shape. Red blood cells carry oxygen to the body and are normally shaped like a disc. |