What causes a four leaf clover?
There is a debate as to whether the four-leaf clover is caused by genetic or environmental factors. The rarity of the four leaf clover suggests a possible recessive gene at a low frequency as the cause. Alternatively, four-leaf clovers could be caused by a somatic mutation or a developmental error of environmental causes. The condition could also be caused by the interaction of several genes that happen to segregate in the individual plant. It is possible that all four explanations could apply to individual cases.
