The adaptive significance of the incest taboo is to avoid inbreeding depression. Malaria a. Malaria is caused by protozoa of the genus Plasmodium . A mutant form of the malaria parasite, known as Plasmodium S , confers resistance to sickle cell anemia. Humans in malaria-infested regions are also resistant to cystic fibrosis. Rats a. Normal female rats show lordosis when they are sexually receptive and mounted by a male.
Females cease to exhibit lordosis after removal of their ovaries.
Injection of estrogen and progesterone causes lordosis behavior in ovariectomized females as well as castrated males. Females exposed to testosterone prenatally do not show lordosis when injected with estrogen and progesterone. Name these vectors and briefly outline their advantages and problems. Match up by entering the appropriate letters in the spaces behind the numbers. First hominids 2.