It depends on the individual as well as the surgeon, but 2 common options are the hamstrings or the patellar tendon
I would say b c and d are the same and all of them are
The wander is (B. two way traffic )
There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.