BIOL 120 Chapter Notes - Chapter 11: Chromosome, Reciprocal Cross, Color Blindness
Document Summary
Key concepts: linked genes do not follow the principle of independent assortment, linked genes can provide us information about the locations (loci) of genes on chromosomes, sex-linked genes (genes on the x-chromosome, typically) show distinct patterns of inheritance. Genetic linkage: genes being located on the same chromosome to be inherited together. Recombination: the physical exchange of segments between the chromatids of homologous chromosomes or between the chromosomes of prokaryotic cells or viruses. Recombination frequency: in the construction of linkage maps of diploid eukaryotic organisms, the percentage of testcross progeny that are recombinants. Linkage map: map of a chromosome showing the relative locations of genes based on recombination frequencies. Parental and recombinant progeny: parental progeny (phenotypes identical to the original parental individuals) and recombinant (phenotype with a different combination of traits from those of the original parents) Reciprocal cross: to test the role of parental sex on a given inheritance pattern.