Rho helicase terminates transcription by: a) catalyzing the formation of RNA hairpins that displace RNA polymerase.
b) melting the DNA helix to reveal a transcription termination sequence.
c) melting the RNA-DNA duplex, which causes RNA polymerase to fall off.
d) melting the DNA helix, which prevents RNA polymerase from advancing.

Amouse that is homozygous for the dominant trait has the genotype . it has . a mouse that is homozygous for the recessive trait has the genotype . it has . image of fur color of mice

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Environmental science are unconsidered with methods to preserve natural resourcesa.trueb.false