25. Which of the following are found in both DNA and RNA? ribose phosphate groups, and ladenine phosphate groups, guanine and thymine phosphate groups, guanine , and cytosine deoxyribose,phosphate groups, and guanine

## Step 1<br />The question is asking which components are found in both DNA and RNA. DNA and RNA are both nucleic acids, which are the building blocks of life. They are composed of a sugar, a phosphate group, and a nitrogenous base.<br /><br />## Step 2<br />The sugar in DNA is deoxyribose, while in RNA it is ribose. The phosphate group is a component of both DNA and RNA. The nitrogenous bases in DNA are adenine, guanine, cytosine, and thymine. In RNA, thymine is replaced by uracil.<br /><br />## Step 3<br />Given the options, we need to identify the components that are found in both DNA and RNA. The components that are found in both DNA and RNA are phosphate groups, guanine, and cytosine.