1. The group nearest the end or with the shortest stem of a phylogenetic tree has evolved most recently. In this case it is eutherians.
2. The group with the longest stem has been around the longest: fish
3. A direct common ancestor will share the same immediate line, like marsupials and eutherians. Fish and marsupials do not have a common direct ancestor.
This question is very good
Muscle spasms is the answer i belive because you dont have the control
C.) T<span>he DNA unravels to make two strands </span>
