The correct answer would be 4 I believe
Sickle cell anemia is recessive, meaning people with the disease inherit it from both parents.
Answer: amino acids
A mutation is a single or multiple event which brings a change in a genetic material of the organisms. A mutation will alter a DNA base pair that causes deletion or substitution of one amino acid in a protein encoded by a gene.
Alveoli walls are composed of Type 1 and Type 2 alveolar cells