. What is point mutationGive one example
Point mutation is the change of a single base pair in a gene.
It can be due to deletion,insertion or due to substitution.
A very common example is sickle cell anemia.
In this there is a single base substitution at the sixth codon of the beta globin gene from GAG to GUG.
Due to this substitution, valine is formed instead of Glutamic acid at the sixth position of the beta globin chain of the hemoglobin.
This causes the change in shape of the RBCs to sickle shape.
Point mutation- single base pair changes.