1 Some people are born with moles. Other moles appear later in life. 2  Sun exposure seems to play a role in the development of moles and may even play a role in the development of atypical, or dysplastic, moles.  The role of heredity cannot be overemphasized.
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A: Only certain species of mosquitoes of the Anopheles genusâand only females of those speciesâcan transmit malaria. Malaria is caused by a one-celled parasite called a Plasmodium.Female Anopheles mosquitoes pick up the parasite from infected people when they bite to obtain blood needed to nurture their eggs.: Only certain species of mosquitoes of the Anopheles genusâand only females of those speciesâcan transmit malaria. Malaria is caused by a one-celled parasite called a Plasmodium.