Please help me 20 points !!the answers choices are a- insertion
b-deletion
c- both insertion and deletion
d-impossible to determine

C.an insertion or a deletion

Explanation:

trust

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;