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This Concept Map, created with IHMC CmapTools, has information related to: Chapter 15, X chromosomes one of each forms a male, be lost thus causing a deleation, chromosome theory of inheritance states that Mendelian genes have specific loci on chromosomes, and the chromosomes undergo segregation and independent assortment, recombinant types are offspring that do not inherit one of the parental phenotypes, nondisjunction causes offspring cells to have aneuploidy, chromosome theory of inheritance explains chromosomes, linked genes are genes that tend to be inherited together in genetic crosses on the same chromosomes, mutant phenotype due to changes in the wild type, aneuploidy can gain an extra chromosome which is called trisomic, polyploidy is where cells have more than two complete sets of chromosomes, nondisjunction causes offspring cells to have polyploidy, trisomic which can cause Down syndrome, X chromosomes two inherited form a female, genetic recombination is the production of offspring with combinations of traits different from those found in either parent, aneuploidy can lose an extra chromosome which is called monosomic, genetic recombination occurs due to crossing over, genetic map based on recombination frequencies is called linkage map, Genes can be sex-linked genes, map units 1 unit is equal to 1% recombination frequency, chromosomes are either Y chromosomes