deserts
deserts
deserts
People with a sickle-cell gene are resistant, but not immune, to malaria. African people, who were greatly exposed to malaria, were more likely to survive malaria with sickle-cell genes, so the survivors passed it on to their children. Not all African people have sickle-cell genes.
mosquitos carry infected blood from those with malaria and when they bite another person the pathogen is passed onto them and they are likely to get malaria :)
Malaria was most likely spread through the bite of a female mosquito.
in parasite
doctors or nurses more likely to be a nurse
Not really. Different blood types have different protections and weaknesses to different diseases. Type O is resistant to malaria. Others can protect against certain diseases.
Flu __ It's likely malaria.
Genetic drift
There could be many possibilities. Most likely malaria.
Genetic drift