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Sweet orange genome sequenced

An international team of researchers has completed an analysis of the draft genome of sweet orange ( Citrus sinensis). The sequence covers some 87% of the estimated orange genome, which is relatively compact, as 20% of it is composed of repetitive elements. The 367 Mb genome contains more than 29,400 protein coding genes and 227 miRNA genes. Comparison of the sequence data with that from other citrus genome sequences suggests that sweet oranges originated from a backcross hybrid between pummelo and mandarin.


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