Linkage+and+Sex+Linkage

Leaning Objectives:


 * Define the term "linked genes"
 * Explain Mendel's law of segregation
 * Identify gene interactions where genes are linked
 * Explain why phenotype ratios of offspring are different for linked genes

Sex Linkage

Autosomal Linkage

__**Collaborative Notes on Linkage**__
 * Linked Genes -** presence of two or more genes on the same chromosome, resulting in their inability to segregate independently during meiosis.


 * Crossing Over -** is the exchange of sections of non-sister chromatids during chromosome pairing in meiosis and so new combinations of alleles are produced.
 * It is unlikely to occur between two genes if they are close together.