5) When scientists first examined the anchor arm creatures, they only noticed 2 ovaries in the A7 individual, and published a paper that 2 ovaries and 1 arm were highly derived traits that arose in response to the environment in which A7 lives. Given the tree you just constructed, what information have you learned about the presence of 2 ovaries in the A7 species

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.