Apoptosis is the regulated or controlled death of cells. It is sometimes referred to as "programmed cell death." This occurs when external and internal factors trigger genes to produce "self-destruct" enzymes. These enzymes are thought to come from the lysosomes inside the cell. Our immune system is also involved in absorbing these cell parts and recycling them to make new molecules or cells
When humans are in early fetal development, the fingers and toes are connected by a webbing of skin between them. Later in development, apoptosis takes place whereby enzymes are released from the lysosomes to destroy these skin cells. As a result, when we are born, our fingers and toes are separated. You may know of someone that has not had digital apoptosis happen normally. They may have a couple of toes or fingers webbed together. This is not all that uncommon.
because all of them are produces for example the life cycle of the Caterpillar First it is a Caterpillar then he is tournd into a pupa then he is a bauterfly then it reproduces and reproduces
