Answer:
A. are caused by genes for defective proteins
Explanation:
Sickle cell anemia occurs when the gene coding for the beta chain of the hemoglobin has a substitution mutation. The mutant gene code for a faulty protein. The mutated hemoglobin forms aggregates and imparts sickle shape to the red blood cells carrying them. Similarly, hemophilia is caused due to mutation in the gene coding for Factor VIII. This protein is involved in blood clotting. The affected person has a deficiency of Factor VIII and experience severe blood loss even in case of a small injury.
Electrons on shells, protons and neutrons in nucleus
Answer:
a. gluteus maximus
Explanation:
The gluteus maximus muscle belongs to the most superficial layer of the dorsal gluteus musculature, being a thick and quadrilateral mass that forms the buttock prominence. Its upper edge is thin and covers the gluteus medius muscle, while its lower edge is prominent and free, moving inferolaterally and being crossed by a horizontal gluteal fold.
This is the muscle used for dorsagluteal injections.