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What is apomixis? How does it differ from amphimixis?

What is apomixis? How does it differ from amphimixis?Apomixis is asexual reproduction without fertilization — developing or producing without sexual union. This is a botanical term (also known as apogomy) used with respect to many plants. Apomixis can occur in two ways: when the embryo arises from unfertilized egg produced without meiosis, called agamugenesis; a nucellar embryo is formed from surrounding nucellus tissues. The seeds produced are generally identical to the main plant. Examples of apomixis are hawthorns, shadbush, white beams, black berries, dandelions, etc. Recently, it has been discovered that Sahara cypress seeds are got from pollen with no genetic help from the female parent. This differs from amphimixis which is reproduction through the sexual process involving egg fertilization through sperm.

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