In rna the nucleotide is used in place of thymine in dna

In RNA, thymine is replaced with Uracil.

Explanation:

Genetic material (DNA and RNA) is made up of nucleotides. These are Adenine, Thymine, Guanine, Cytosine, and Uracil. Three of them (Adenine, Cytosine, and Guanine) are present in both types of genetic material, i. e. DNA and RNA. However, in DNA Thymine is present whereas in RNA, Uracil replaces Thymine. They are similar in structure except that Thymine has additional methyl group.