DUPLICATION CONSEQUENCES. “Responses at the genomic (DNA) level include mutagenic gene silencing or deletional loss, intergenomic transfer of repetitive elements such as transposable elements, differential rates of accumulation of synonymous or nonsynonymous nucleotide substitutions, and various forms of homoeologous (duplicated copies generated by polyploidy) interaction or gene conversion that generate sequences chimeras or duplicated genes (shown as “recombination”).”
http://www.amjbot.org/content/early/2015/10/09/ajb.1500320