If I remember correctly the chloroplast creates oxygen through photosynthesis. The suns energy creates glucose and in return releases oxygen.
It's something to do with the fact that having sickle cell anaemia reduces the chances of contracting malaria, obviously a very common disease in Africa. I'm not quite sure what the link is but hopefully this helps a little bit?
Answer: A gene that is hidden or not expressed.
Jane doe because that is who the envelope is a dressed to
