Multiple choice

Which amino acid change causes sickle cell anaemia?

  1. Threonine to valine

  2. Glutamic acid to valine

  3. Glutamic acid to isoleucine

  4. Alanine to valine

  5. Glutamic acid to alanine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The change of glutamic acid to valine in the sixth position of beta globin chain of haemoglobin causes sickle cell anaemia.