Which of the following statements lists the steps that occur in the cell cycle, in chronological order? centrioles move to opposite ends of the cell; cell passes through g1 checkpoint nuclear membrane disappears; chromatin condenses sister chromatids align in the middle; cytoplasm pinches in to separate daughter cells sister chromatids are pulled apart to opposite ends of the cell; spindle fibers begin to appear

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

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing

Which of the following describes what an activator an enhancer are