What difficulties did the geneticists who studied the inheritance of traits in sweet peas face?

Problem: these inheritance corolla coloration and pollen form, these two traits from generation to generation inherited together. Gradually, the facts of exceptions to the law of independent inheritance of Mendel accumulated. It turned out that not all traits are inherited independently.

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.