Robusta vs Arabica - Coffee Fact

There is a massive chromosome difference between Robusta coffee and Arabica. Robusta coffee beans only contain 22 chromosomes and are unable to self-pollinate. Arabica beans however have 44 chromosomes and are able to self-pollinate. Insects are much more prominent at lower altitude and Robusta trees take advantage of this by not having developed the ability to self-pollinate.

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