2. Most children with sickle cell anemia have parents who do not have sickle cell anemia. Explain how a person can inherit sickle cell alleles from parents who do not have sickle cell anemia. Is the sickle cell
allele dominant (s) or recessive (s)? Explain your reasoning. Include a Punnett Square in your answer.

What type of competition exsist between two species. turtles and fish

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

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.