Human blood types have 3 alleles: A, B, and O. A and B are codominant, while o is recessive to A and B.
If a person has the genotype AO what is their blood type?
a. O
b. B
C. AB
d. A

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.

Can a trait be both polygenic and have multiple alleles? explain why or why not.

Sequence how oxygen accumulated in the atmosphere and the effect it had on life by completing the flowchart