Genetics of 4-leaf clovers remain mysterious

The shamrock is a standard symbol of St. Patrick's Day. And according to popular lore, the variety that carries that extra bit of "luck of the Irish" is the four-leaf clover. But how rare is the four-leaf variety? CBC Radio science columnist Torah Kachur looks at the genetics of clover.
The shamrock is a standard symbol of St. Patrick's Day. And according to popular lore, the variety that carries that extra bit of luck of the Irish is the four-leaf clover. But how rare is the four-leaf variety? CBC Radio science columnist Torah Kachur looks at the genetics of clover.

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