A basket of orange fruits, called sweet orange. The orange is the fruit of the citrus species Citrus × sinensis in the family Rutaceae.


The orange is a hybrid between pomelo (Citrus maxima) and mandarin (Citrus reticulata). It has genes that are ~25% pomelo and ~75% mandarin; however, it is not a simple backcrossed BC1 hybrid, but hybridized over multiple generations. The chloroplast genes, and therefore the maternal line, seem to be pomelo. The sweet orange has had its full genome sequenced. Earlier estimates of the percentage of pomelo genes varying from ~50% to 6% have been reported.


Size: 6000px × 4000px
Location: Paris, Prancis
Photo credit: © Yahdi Bin Rus / Alamy / Afripics
License: Royalty Free
Model Released: No

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