Question

what is point mutations????​

Answer 1

Answer:

a mutation effecting only one or very few nucleotides in a gene sequence..

Explanation:

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Answer 2

Answer:

• Point mutation is a change in a single base pair of DNA by substitution, deletion, or insertion of a single nitrogenous base.
• An example of point mutation is sickle cell anaemia.
• It involves mutation in a single base pair in the beta-globin chain of haemoglobin pigment of the blood.
• Glutamic acid in short arm of chromosome II gets replaced with valine at the sixth position.