What is one difference between dna and rna?

       There are some main differences between DNA and RNA, the first one is quite simple, DNA is made out of a double ribbon, and RNA is made out of a single one. But this is not the only difference, and not even the main one. The main difference is at their content, DNA includes some nucleotides , they are cytosine (C), thymine (T), adenine (A), guanine (G), but on RNA it's a little bit different. Instead of a thymine, there's a new nucleotide called uracil (U). By that information we can rearrange the base pairs, in DNA it's (A-T) and (C-G), but in RNA it's (A-U) and (C-G).

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: