Today, it's widely accepted that all of the two-legged meat-eating dinosaurs known as theropods- including T. rex and Albertosaurus-had at least very simple fuzzy feathers covering their bodies. According to the tree you
built, what distinguishes the feathers of modern birds and Archaeopteryx from the feathers of other
theropods?

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.