You have just restated the mother's wishes rather than giving a diagnosis.
No diagnosis can be made unless testing is done. The single sickle cell gene (heterozygous) protects against malaria, but being homozygous (having both genes) for this trait causes the disease.
The only way that boy will have the possibility of having the disease is if his father was also a carrier (heterozygous) or had the disease.
I hope this helps.
Sickle cell anemia
The formations vary but gerneally you haveFullbacks (or defenders); Primarily defensive, focus on stopping the opposing offense from scoring by tackling and getting the ball out of their defending third. (In some formations, outside fullbacks will move up to aid in offensive play, but it is not a focus)Midfielders: There can be outside midfielders, who aid in attack by getting the ball up the flanks, completing crosses etc. Defensive midfielders, who aid in attack but stay behind attacking midfielders and play a more defensive role and attacking midfielders who go forward and try to score like the strikers, but like all midfielders have to drop back and aid in defending when the ball is lost. Midfielders play as a middle-man role. Attacking and distributing the ball to the strikers and aiding in defensive play.Strikers (forwards); Depending on whether your team plays with central forwards who are solely goal scorers and offensive players, or with strikers AND wingers, who as well as attacking look to make crosses it can be different. But these positions have an attacking focusGoalkeeper: Only player allowed to use the hands within the 18, defends the goal. Pretty self explanatory.The laws of the game are the same in high school soccer as everywhere else. here are the laws according to fifa.