Help quick! A scientist finds several hundred fish fossils in the dessert. This evidence best supports which of the following scientific ideas?

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

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.

What tool do geneticists use to predict the outcome of genetic crosses? a. karyotype b. punnett square c. centrifuge