Bio exam 4 ch 13

-Genes located on a chromosome fairly close together -Don’t sort independently -More parental combatants than recombinants

Chromosomal location of a gene

-Recombinants/total offspring -If >50% they are unlinked -Lower is linked -0% is no cross over -% = map units (centimorgans)

Inheritance is based on the behavior of chromosomes (bc genes are on them)

-Fruit fly geneticist -contributed to chromosome theory of inheritance and genetic linkage

Shows map units and distance along a chromosome

Shows all autosomes on display including any abnormal numbers and structures

-Homologs/sisters fail to separate during anaphase I/II -Results in anaploidy

-Too few or too many copies of an individual chromosome -Monosomy (2n-1) -Trisomy (2n+1)

-More that 2 sets of chromosomes -Triploid (3n) -Teraploid (4n) -Plants

Loss of a chromosome segment

Repeat of a chromosome segment

180 flip of a chromosomal segment

Piece of one chromosome segment is moved to a different chromosome