In what way does RNA polymerase act like helicase

Which of these statements are true about scientific theories and hypothesis

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian