Chargaff found that the proportion of adenine, guanine, cytosine, and thymine varied from organism to organism. How does Chargaff’s work support the idea that DNA is the molecule of inheritance?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils