Which correctly describes the role of histones in eukaryotic cell division?
A-Histones protect the ends of chromosomes
B-Histones allow the DNA to be compact and stay organized
C-Histones connect sister chromatids
D-Histones copy the DNA before division begins

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.