11. They are said to have the sickle cell trait and are not affected by the disease. 12. One-third of all survival value in carrying only a single sickle-cell gene ( sickle cell trait ). 13. During his freshman year at the University of Georgia, Atkins learned he suffers from Sickle cell trait . 14. The autopsy cited instances in which the sickle cell trait was found in Darling's organs and nervous system. 15. Sickle cell trait is not the same as sickle cell anemia, in which two abnormal genes are present.16. However, Craig noted sickle cell trait appears to lower resistance to a possible irregular heartbeat during intense exercise. 17. A child born to two parents with the sickle cell trait has one chance in four of the disease. 18. Dr . Randy Eichner, expert on exertional sickle cell trait deaths, testified that Dr . Siebert's conclusions were correct. 19. The impact of sickle cell trait on malaria immunity illustrates some evolutionary trade-offs that have occurred because of endemic malaria. 20. It has been shown over and over again that not all people with sickle cell trait know they have it.
