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;
18 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Wild type |
Normal phenotypes that were common in the fly populations. |
|
|
|
Sex-linked gene |
Gene that is located on either sex chromosome. |
|
|
|
X-linked gene |
Genes that are on the X chromosome. |
|
|
|
Linked genes |
Genes located on the same chromosome that tend to be inherited together.. |
|
|
|
Genetic recombination |
Production of offspring with combinations of traits differing from either parent. |
|
|
|
Parental types |
Offspring with a phenotype matching one of the parental phenotypes. |
|
|
|
Recombinants |
Offspring with nonparental phenotypes (new combinations of traits) |
|
|
|
Genetic map |
Ordered list of the genetic loci along a particular chromosome. |
|
|
|
Linkage map |
Genetic map of a chromosome based on recombination frequencies. |
|
|
|
Map units |
One map unit, or centimorgan, represents a 1% recombination frequency. |
|
|
|
Nondisjunction |
Pairs of homologous chromosomes do not separate normally during meiosis. |
|
|
|
Aneuploidy |
Results from the fertilization of gametes in which nondisjunction occurred. |
Triploidy (3n) 3 sets of chromosomes Tetraploidy (4n) 4 sets of chromosomes |
|
|
Polyploidy |
Condition in which an organism has more than two complete sets of chromosomes. |
|
|
|
Deletion |
Removes chromosomal segment. |
|
|
|
Duplication |
Repeats a segment. |
|
|
|
Inversion |
Reverse orientation of a segment within a chromosome. |
|
|
|
Translocation |
Moves a segment from one chromosome to another. |
|
|
|
Down syndrome |
Aneuploid condition that results from three copies of chromosome 21. |
|
