Coffee tree genome sequenced

In the study published in Science, the researchers were interested in Robusta coffee because of its average sized genome (710 million pairs of DNA bases) and its diploid nature (contrary to Coffea arabica, which is tetraploid). The genetic map of the coffee tree studied, produced in the 1980s by IRD in Cote d'Ivoire, also had the advantage of being a homozygous plant (two identical sets of eleven chromosomes), which is easier to analyse than natural heterozygotes.

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