Figure 2From: Beyond genomic variation - comparison and functional annotation of three Brassica rapagenomes: a turnip, a rapid cycling and a Chinese cabbageDefinition of retained and lost genes. Illustrative examples of a retained and a lost gene in turnip. (a) A. thaliana gene A has three orthologous genes in turnip, but only two in Chiifu and rapid cycling; hence, we call A a retained gene for turnip based on the presence of A3. (b) Gene A is considered a lost gene for turnip based on the absence of A3.Back to article page