Plant Genome Organization and Structure : Evolution of Repeated Sequences in Cereals

Analysis of Genomes by Reassociation Experiments

Repeated Sequences

Organization of Single-copy Sequences

Evolution of Repeated Sequences in Cereals

Estimating the Number of Expressed Genes

Chloroplast Genome Organization

Mitochondrial Genome Organization

RNA Editing

Course Topics

Course Home Page

Evolution of Repeated Sequences in Cereals

The analysis of repeated sequences has also provided experimental evidence which supports the current model of cereal speciation. The following tables and the associated diagram detail the results. These show that once a repeat enters the lineage it remains. Therefore group I repeats are found in all of the species because it is the most ancient repeat. Secondly, new repeats are added to the lineage and appear in all species which subsequently diverged from the lineage. Finally, species-specific repeats are formed in each species after that species has diverged from the common lineage. The distribution of the lineage specific repeat supports the speciation model.

Copyright © 1998. Phillip McClean