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四叶草英语介绍

发表时间：2024-07-30 17:39:12 来源：网友投稿

The four-leaf clover is an uncommon variation of the common three-leaf clover. According to superstition, such leaves bring good luck to their finders, especially if found accidentally.

Clovers can have more than four leaflets. The most leaflets ever recorded is eighteen.It has been estimated that there are approximately 10,000 three-leaf clovers for every four-leaf clover.

It is debated whether the fourth leaflet is caused genetically or environmentally. Its rarity suggests a possible recessive gene appearing at a low frequency. Alternatively, four-leaf clovers could be caused by somatic mutation or a developmental error of environmental causes. They could also be caused by the interaction of several genes that happen to segregate in the individual plant. It is possible all four explanations could apply to individual cases.

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