Researchers have found a gene in yeast that codes for a myosin protein, which is also coded by gene in humans, what does this similarity at the molecular level in yeast and humans indicate?

a) humans and yeast share common ancestry
b) humans and yeast contain the same genetic code
c) humans and yeast belong to the same kingdom

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?