In what situation might natural selection maintain a recessive allele even if it is harmful

Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.

What sre the effects of hemolytic disease of a newborn

What makes a dominant allele different from a recessive allele