Pre-Mendalian concept of heridity

Answer 1

Pre-Mendalian concept of heridity:- A) "Fluid Theory" - one of the earliest views on heridity, put forwarded by Aristotle. He believed that the semen of man is highly purified form of blood and the menstrual fluid which is regarded as semen of woman is less purified blood. And the inheritance was due to mixing of such blood of the parents. He believed in direct inheritance of characters. B) "Pangenesis Theory" by Charls Darwin and He suggested that every part of the body produces minute microscopic structures that are called 'pangenes'. These 'pangenes' are transported to sex organ through blood and ultimately collected into the gametes. During fertilization the pangenes of both the parents are mixed & determine the characters of the offspring.

Answer 2

Before Mendel, the prevailing idea was that offspring inherited a blend of characteristics from their parents, leading to continuous variation. This theory, known as blending inheritance, could not explain why some traits seemed to "disappear" in one generation and reappear in later generations. Mendel's work with pea plants demonstrated the concept of discrete units of inheritance (genes) and how they are passed down through generations.