Suppose that the Earth had been much cooler when it first formed. How Would the Earth's interior be different than it is Today

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

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

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous