• Genes that are located on the same chromosome are called linked genes.
  • Alleles for these genes tend to segregate together during meiosis.
  • Crossing-over occurs when two homologous chromosomes exchange genetic material.
  • The closer together two genes are on a chromosome, the less likely their alleles will be separated by crossing-over.
  • Linkage explains why certain characteristics are frequently inherited together.
  • For example, genes for hair color and eye color are linked.
  • Certain hair and eye colors tend to be inherited together, such as blonde hair with blue eyes and brown hair with brown eyes.
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