Question

5. Sickle-cell disease is caused by a mutation that produces an abnormal protein.The gene for sickle-cell disease causes a person's red blood cells to be shaped like asickle instead of being round and flat. Sickle-shaped red blood cells do not carryoxygen very well, which causes health problems and lowers survival rate. However,in areas where malaria is common, people that have the sickle-cell gene areprotected from malaria. The malaria parasite relies on normal red blood cells togrow, and cannot easily complete its life cycle in sickle-shaped cells. What does thegiven information demonstrate?sickled red blood cell normal red blood cellO A. All mutations always have both Good and bad effects.O B. A mutation's negative Effects always outweigh its benefits.C. A mutation can be both harmful and Beneficial.O D. All mutations in humans Result in a neutral effect.

Answer 1

A modification in the DNA sequence is referred to as mutation. Mutation's outcome can be beneficial, harmful, or neutral. The situation at hand illustrates a mutation that can be bothe harmful and beneficial. Sickle-shaped cells present in a person suffering from sickle-cell disease has the ability to protect itself from malarial parasite. The sickle-shaped cell has the ability to be elastic and thereby discharge the nutrients that is needed by the malarial parasites for survival. This will eventually lead to the destruction of the said parasite.

Answer - Option C - A mutation can be both harmful and beneficial