The banana is a giant herb and close family members include rice (Oryza sativa) and ginger (Zingiber officinale).
Around 65 Million years ago a giant meteorite smashed into the coastal area of eastern Mexico. That event heralded the end of the age of the dinosaurs but it also had a profound effect on other species, such as plants. The genome of the tomato was altered as a result of the changing conditions on the planet. It was tripled in size in order to survive. Lycopene was formed and since then it got its red colour. Other genes disappeared, making it non-toxic.
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 The Tomato Genome Consortsium: The tomato genome sequence provides insights into fleshy fruit evolution in Nature - 2012
 D'Hont et al: The banana (Musa acuminata) genome and the evolution of monocotyledonous plants in Nature - 2012