Traits that are detrimental to the long-term survival of an individual can occur in a population (select all that apply): a. if they arise due to a mutation. b. Never c. when the trait increases an individual\'s chance of reproducing. d. because there has to be variation in the population. e. if they enter the population through gene flow from another habitat where the traits are favorable. Solution a. if they arise due to a mutation. d. because there has to be variation in the population..