The combined effect of two drugs, each producing the same biological respons by the same mechanism of action, is equal to the sum of their individual effects. a) additive effectsb) antagonismc) incompatibilityd) summatione) tolerancef) synergism

Why do mutations in genes affect traits? o a. genes determine what type of mutagens an organism has. o b. genes produce proteins that cause traits. o c. genes affect how many chromosomes an organism has o d. genes code for carbohydrates that influence traits.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.