What is point mutation? Give one example.
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.
1. The enzyme that is present in the saliva of man is
2. Question 7:What are sacred groves? What is their role in conservation?
4. Which plant is called Herbal Indian Doctor
6. Life of red blood cells in the body is
7. The presence of air bubble in blood stream is dangerous to life because
8. Contraction of heart is also known as
9. Musa paradisiaca is the scientific name of which plant?
10. The non-vascular land plants are included in the group called