Mitochondrial DNA can be used as evidence for human evolution. Explain why mitochondrial DNA is used rather than nuclear DNA

The first reason why mitochondrial DNA is better than using nuclear DNA is because it is in a higher abundance than nuclear DNA. Furthermore, mitochondrial DNA is more stable over time and less susceptible to decay, unlike nuclear DNA. Mitochondrial DNA also has a high mutation rate which means it can be used to show evidence of human evolution. Mitochondrial DNA is also used rather than nuclear DNA as it shows the inheritance down the female line - providing a map for evolutionary changes. Additionally, it is also easier to extract mitochondrial DNA than nuclear DNA. Also, because no recombination occurs in mitochondrial DNA, it shows a pattern of maternal inheritance as it is all passed down from the mother and therefore much rather used than nuclear DNA.

RP
Answered by Riya P. Biology tutor

10091 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What are the differences between plant and animal cells?


How does a reflex arc work?


Describe how animals and plants are adapted to survive in dry conditions such as deserts. For each adaptation explain how this helps them survive. (6 marks)


What is diffusion and what are the factors that influence the rate of diffusion? What are some of the ways diffusion is used in the body? What is it called when water is diffused through a semi permeable membrane?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning