The predominant cells in blood are the red blood cells (RBC) which contains a protein called hemoglobin. Hemoglobin is the principal determinant of the color of blood. Arterial blood and capillary blood are bright red, as oxygen imparts a strong red color to the heme group.
RNA is assembled as a chain of nucleotides, that is usually  single-stranded. In eukaryotic cells, it can be found in the  nucleus and cytoplasm. Edit. Share to: Lsilvstew. 2,538 Contributions. Answered Most Recently. In Genetics.
DNA is mainly only found in the nucleus (if we disregard mitochondrial DNA). RNA is found in both nucleus and cytoplasm, as it is synthesized from the DNA template in the nucleus but is addressed to the cytoplasm, like a letter, a message (hence mRNA m for messenger) where it is translated into a protein by the ribosome.