DNA contents of nitrogenous bases • %A = %T %C = %G • A+G = C+T %3D Example: if 35% of the bases of a DNA - molecule is thymine what the % of Cyosine?

a. Deoxyribonucleic acid (DNA) is a molecule composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. Select from the drop down menus to complete the complimentary strand for the following DNA molecule: A [ Select ] [ Select ] G [ Select ] [ Select ] [ Select ] A [ Select ] [ Select ] [ Select ] [ Select ] > > > > > >

What is the role of GelRed® in Agarose gel electrophoresis of DNA fragments? Please select the single answer that is most correct GelRed® moves down the agarose gel in response to the electric current and enables visualisation of the position of A the nucleic acids within in the agarose gel. GelRed® intercalates with the Nucleic acid and, under UV light, fluoresces to enable visualisation of the position of the nucleic acids in the agarose gel. GelRed® intercalates with the Nucleic acid and enables visualisation of the position of the nucleic acids in C the agarose gel. GelRed® intercalates with the amino acids in the agarose gel and enables visualisation of the position of their in D the agarose gel.

At 260 nm what component of DNA absorbs at this nm(hydrogen bond, phosphate backbone, nitrogenous base, deoxyribose).