What is the object of mitosis? what mechanism in mitosis allow this to occur?

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources