Erwin chargaff discovered that the dna of any species contains equal amounts of adenine and thymine, and also equal amounts of cytosine and guanine based on this information, scientists could predict that the base

pairs with

and the base

pairs with

in the information of the adn molecule

The base adenine pairs with thymine, and the base cytosine pairs with guanine.

Explanation:

From Chargaff's discovery, which was that the DNA of any given species contains equal amounts of adenine and thymine, and equal amounts of cytosine and guanine, we can deduce that if there is an equal amount of two bases in DNA, those two bases must pair together. From this information, we can then go on to say that since there are equal amounts of adenine and thymine, they pair together, and since there are equal amounts of cytosine and guanine, they also pair together.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.