I need an explanation for this Biology question to help me study.Lab 6 Part B. Restriction Site Mapping of a Polymorphic Mitochondrial DNA (mtDNA) Mitochondrial DNA is DNA that is located in the mitochondria, organelle that converts chemicalenergy from food into ATP. MtDNA is a small portion of DNA found in cells, but since thisevolves faster than nuclear DNA it has become important in phylogenetics and evolutionarybiology. This DNA is inherited from the mother. This DNA is highly conserved and has a slowmutation rate, but polymorphisms can occur. A polymorphism is the presence of geneticvariation within a population, upon which natural selection can occur. Today students will map apolymorphic mtDNA.Section 1: You have isolated some mitochondrial DNA (mtDNA) from Walleye (Sander vitreous).The mtDNA was digested with four restriction endonucleases Apa Ⅰ, Bcl Ⅱ, Cla Ⅰ, and DraⅠ. The fragments obtained Requirements: all