What are the differences between phenotypes? Why do organisms form different phenotypes with the same genotype?

The difference between phenotypes: seed color, seed shape, leaf size.
– Some characters are completely determined by the genotype and are independent of environmental conditions. These include, for example, blood types and many genetic diseases.
– Other characters depend on both the genotype and the environment. For example, a person’s growth depends on his genotype (remember the work of Galton). At the same time, growth also depends on environmental conditions, in particular, on nutrition during the growth period. Skin color is largely determined by genotype. But the skin color of people with the same genotype very much depends on the time they spend in the sun

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.