Gene and genome duplication

Genomic sequencing projects have revealed the productivity of processes dup licating genes or entire chromosome segments. Substantial proportions of th e yeast, Arabidopsis and human gene complements are made up of duplicates. This has prompted much interest in the processes of duplication, functional divergence and loss of genes, has renewed the debate on whether an early v ertebrate genome was tetraploid, and has inspired mathematical models and a lgorithms in computational biology.