"the isolation of cell-cycle mutations in yeast was greatly facilitated by the use of mutations, which allow investigators to study the effects of mutations that would be lethal if expressed constantly"

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Where in the cell are ribosomes made?

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs