There is a way of transmitting hereditary information through the cell cytoplasm. This type of heredity is called cytoplasmic or nonchromosomal. Own DNA contains mitochondria and plastids. Due to this, they are capable of self-reproduction. If a green euglena cell loses plastids, it cannot form them again, despite the surviving nucleus. Usually, about 100 chloroplasts are in the euglena cell. In the dark, euglena goes on to heterotrophic nutrition, and its plastids do not multiply, although euglena itself continues to divide. After several generations, in conditions of lack of light, individuals appear who “lacked” chloroplasts. The descendants of this euglena will never have these organoids.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.