<prompt> The bases which are present in human DNA?Adenine-guanine-thiamine- uracilAdenine-guanine- cytosine-uracilAdenine- guanine-cytosine-thymineNone of the above  <response>: Double-stranded ds Has adenine- guanine-cytosine-thymine Has Deoxyribose DNA does not contain Uracil 2 strands are held together by hydrogen bonds. There are covalent bonds 3 5 phosphodiester bonds in sugar-phosphate backbone. 