Label:
Radiation can cause DNA mutations, 3D animation with narration
Description:
DNAi Location:
Application>Human Origins>gene geneaolgoy>A molecular clock>DNA mutation
Mutations and the molecular clock
Mutations are the grist of evolution, and have accumulated in our DNA over time. When populations separate, each group accumulates their own unique set of DNA mutations.
Because mutations in a particular sequence of DNA occur at a constant rate, the number of accumulated mutations in that sequence is proportional to the length of time that two groups have been separated. This concept is often known as the "molecular clock."
Biological elements:
DNA mutation, radiation, free radical
Concepts precesses:
molecular clock, accumulated mutation, radiation
Tools & methods :