The population in south africa is more prone to sickle cell anemia (genotype "ss"). people with genotype "ss" survive only up to 14-15 years of age. people with "ss" are prone to malaria because the parasite resides inside their rbcs. people with genotype "ss" are resistant to malaria because the parasite cannot reside inside their rbcs, and they can live a normal life (without sickle cell anemia).what kind of evolutionary force must be operative in south africa?

a. stabilizing selection

b. directional selection

c. disruptive selection

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.

Abody cell has been growing and at synthesis proteins. in the nucleus of this body cell, dna replication is taking place. and a copy of the cells genetic material is copied. which of the following is the best conclusion you can make about the life cycle of this cell ? a) the cell is ready to undergo mitosis. and a chemical signal will send the cell to prophase b)the cell is undergoing meiosis and will cross over the genetic material next c)the cell is in the s phase of interphase and will move next to the g2 phase d) the cell is in the g2 phase of the interphase and is ready to begin diving