Explain why some mutations cause differences in phenotype and others do not?

Which organelle plays a role in intracellular digestion?

Select the word from the list that best fits the definition apparent movement of a star used to measure its distance from earth

Kidney stones are tiny crystals of calcium or magnesium that block the narrow sections of the excretory system. which symptoms would a person with kidney stones experience? a. inability to store urine; pain in the bladder b. inability to store urine; pain in the urethra c. reduced urine flow; pain in the bladder d. reduced urine flow; pain in the urethra