I’ll give you a short overview of what I know. 
He was a scientist, biologist, and wrote many books. He was specifically known for creating the science of genetics. 
Mendel was born in 1822 into a poor farming family and then died January of 1884. He was an Austrian monk who discovered the basic principles of hereditary through experiments in his very own garden! 
I’m sorry. I don’t believe this defines him. You can’t really define anyone in this short of a paragraph. To really know him, I’d have to do deeper research.
As for now, I hope this helps out. This probably just scratches the surface of who he really was. Have a great night! 
All my best, 
~Brooke❤️
        
             
        
        
        
Answer:
Mitosis and meiosis both involve duplication of a cell's dna content