Genetic variation . Genetic variation . is created by the direct action of natural selection tends to be reduced by when diploid organisms produce gametes arises in response to changes in the environment must be present in a population before natural selection can act upon the population

Which entry is in the wrong position in the table?

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them