Why is dna called the "double helix"? select one: a. its structure was discovered by two workers, james watson and francis crick, a doubling of research effort at a building informally called the "helix" at cambridge university. b. dna is double stranded, with the two strands both in the form of a helix entwined around each other like strands of a rope. c. when dna interacts with rna, the two molecules form a twisted double strand. d. it seemed like a catchy name even though it has nothing to do with the structure of dna?

the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).