Nucleic acid structure refers to the structure of nucleic acids such as DNAand RNA. Chemically speaking, DNAand RNA are very similar. Nucleic acid structure is often divided into four different levels: primary, secondary, tertiary and quaternary.
Answer:
A. They don’t share ancestors with other organism in the same grouping. Protists belong in a paraphyletic group
Make a structure that looks like a body and put clear tunes around it filled with blue and red fluid in the different pipes and close them up good