Which base is found only in RNA?
nbose
O thymine
ouracil
O deoxyribose

How are gene and protein sequences used to classify organisms?

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm