How do birth rates and death rates affect population

When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

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