Genetic drift in a population affects the gene pool in which of the following ways?

a. decrease in genetic variation
b. increase in genetic variation
c. increased mutations
d. decreased gene flow

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Acommon kind of mechanical weathering is called

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