Discuss the biodiversity and evolutionary relationships of named plant species that constitute our major food crops, with focus on:

Question: Discuss the biodiversity and evolutionary relationships of named plant species that constitute our major food crops, with focus on:
Poaceae – grasses
Fabaceae – beans
Asteraceae – daisies
Solanaceae – nightshades.

Need of about 1500 words in contrast with genetic diversity between the species.

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