Which RNA base pairs with the adenine in DNA? • Thymine
• guanine
• cytosine
• Uracil

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Astudent is looking through a microscope at some cells of an onion root tip. many of these cells are undergoing division since the root tip grows quickly and requires more cells. which cell most recently underwent metaphase? w x y z