Easy 20 and brainliest too!
compare and contrast the roles of dna and rna.

DNA is double stranded while RNA exists in single strands. DNA contains the sugar deoxyribose in its backbone, whereas RNA contains ribose, which has one more oxygen atom. Both nucleic acids contain three bases: adenine, guanine and cytosine. However, RNA contains uracil as its fourth base, while DNA contains thymine.

DNA is double stranded while RNA exists in single strands. DNA contains the sugar deoxyribose in its backbone, both nucleic acids contain three bases: adenine, guanine and cytosine and, RNA contains uracil as its fourth base, while DNA contains thymine.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .