Archaea and eubacteria were found to be most different because
some archaea are anaerobic
archaean biochemistry is more similar to that of eukaryotes than that of eubacteria
archaea don't have a true nucleus
almost all archaea reproduce asexually

The difference between amphid and plasmid

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen