Zakariyya Bari Abdul Rahman (born Joe Lacks) Timeline and Summary

Joe Lacks nearly dies of tuberculosis after the death of his mother.
Ethel starves and beats him. He eventually goes with his siblings to live with Bobbette and Lawrence, but gets in trouble with the law.
Joe joins the military and is discharged after being deemed psychologically unsuitable.
He kills a man named Ivy after Ivy harasses and beats him. Joe hides out in Clover for a time, but surrenders of his own free will in Baltimore.
He spends 15 years in prison where he converts to Islam and changes his name.
After he's released, Zakariyya can't hold a job. He lives on the street outside of Day's house and refuses his father's hospitality.
He participates in experiments at Hopkins to make money.
Zakariyya attends the Morehouse conference arranged by Pattillo and behaves badly.
He meets Skloot for the first time when Deborah brings her by. He receives Lengauer's picture of HeLa cells from Deborah.
Zakariyya travels to Hopkins with Skloot and his sister to see HeLa cells in Lengauer's lab.
Skloot ends Zakariyya's story by telling us that he continued to get into trouble.