| A | B |
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| Chromosome theory of inheritance | Formed when people started noticing the parellel behavior between chromosomes and the behavior of Mendel's factors |
| Wild type | The normal phenotype for a character (the one that is most common in natural populations). |
| Mutant phenotypes | Traits that are alternatives to the wild type. |
| Sex-linked genes | Genes located on a sex chromosome |
| linked genes | Genes that are inherited together because they are located on the same chromosome and in genetic crosses, the chromosome is passed along as a unit. |
| Genetic recombination | The general term for the production of offspring with new combinations of traits inherited from two parents. |
| Recombinants | Offspring that have different combinations of a certain character than either parent. |
| genetic map | An ordered list of the genetic loci along a perticular chromosome. |
| Linkage map | A genetic map based on recombination frequencies. |
| Cytological maps | This locates genes with respect to chromosomal features, such as stained bands, that can be seen in the microscope. |
| Duchenne muscular dystrophy | A sex-linked disorder characterized by a progressive weakening of the muscles and loss of coordination. |
| Hemophelia | A sex-linked recessive trait defined absence of a certain protein required for blood clotting. |
| Barr body | The condensed inactive X in each cell of a female. |
| Nondisjunction | The members of a pair of homologous chromosomes do not move apart properly during meiosis 1, or in which sister chromatids fail to seperate during meiosis 2. |
| Aneuploidy | An abnormal number of chromosomes. |
| Trisomic | what the aneuploid cell is said to be for the chromosome. |
| Monosomic | If the cell is missing a chromosome, the aneuploid cell is said to be this for that chromosome. |
| polyploidy | The term for the chromosomal lteration where an organism has more than two complete chromosomal sets. |
| Deletion | Occurs when a chromosomal fragment lacking a centromere is lost during cell division. |
| Duplication | The fragment that is lost due to deletion may join to the homologous chromosome producing this. |
| Inversion | When the fragment lost due to deletion reattaches tot he original chromosome but in the reverse orientation. |
| Translocation | When the fragment lost during cell division due to deletion joins to a nonhomologous chromosome. |
| Down syndrome | An aneuploid condition which is usually the result of an extra chromosome 21, so that each body cell has a total of 47 chromosomes. |
| Cri du chat | A disorder caused by the structural alteration of chromosome number 5. |
| Chronic myelogenous leukemia | A disorder when a portion of chromosome number 22 has switched places with a small fragment from the tip fo chromosome number 9. |
| what is my red cat's name? | Keesa |
| Who is the most awesome person in the entire world? | Carly |
| Why does Aaron want to clone Shannon | Casue he's DIRTY DIRTY DIRTY! |
