What is a gene? the concept of evolution by way of natural selection is a central tenet in biology that has been tested in numerous ways by many scientists but is not yet considered a law. evolution by way of natural selection is most likely which type of concept?
a hypothesis that can be accepted as true based on repeated experimentation with similar results
a likelihood based on the chance that a particular event will or will not occur
a statement of fact that is generally accepted to be true and universal because it has always been observed to be true
a probability that is an answer to a scientific question and is based on prior knowledge or research

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 have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. b. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. c. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails.

Which of the following systems in absorbing oxygen and releases carbon dioxide

Agene in a type of bacteria when the ses bacteria reproduce asexually this mutation can only be inherited by