The correct answer is Walther Flemming.
Walther Flemming (1843-1905) was a German biologist who is considered the father of cytogenetics. He was the first to observe and describe the process of cell division, which he called mitosis. He also discovered the chromosomes, which are the structures that carry the genetic material.
Chase was an American biologist who worked with James Watson and Francis Crick on the discovery of the structure of DNA. Mendel was an Austrian monk who is considered the father of genetics. He discovered the laws of inheritance, which are the basic principles of how genes are passed down from parents to offspring. Drawin was a German artist who is best known for his drawings of plants and animals.
Walther Flemming’s discovery of mitosis was a major breakthrough in biology. It helped to explain how cells divide and reproduce, and it laid the foundation for the study of genetics.