A particular trait may be neither bad nor good in itself;whether it is adaptive or not depends on the relationship between the organisms that have this trait and their particular environment.Which of the following diseases illustrates this point?
A) Down's syndrome
B) Tay-Sachs disease
C) measles
D) sickle-cell anemia

Question

Quizplus · Accepted Answer

Sickle-cell anemia is an example of a trait that can be adaptive or maladaptive depending on the environment. In areas with a high incidence of malaria, individuals with sickle-cell anemia have an advantage because the sickled shape of their red blood cells makes it difficult for the malaria parasite to multiply. However, in areas without malaria, sickle-cell anemia can be a debilitating and potentially deadly disease.

A Particular Trait May Be Neither Bad nor Good in Itself;whether