How Teacher Retirement System Pension and Social Security Benefits Work Together. If youâre a teacher, youâve probably seen lots of conflicting information on this topic. Thereâs no denying that itâs a complex issue, so hereâs a closer look at the rules on Social Security for teachers.
Uracil. There are five bases in RNA/DNA. They are Adenine, Thymine, Guanine, Cytosine and Uracil. In DNA: Adenine pairs with Thymine, and Guanine pairs with Cytosine In R â¦ NA: Adenine pairs with Uracil and Guanine pairs with Cytosine. + 10 others found this useful.
In DNA, the purine bases are adenine and guanine, while the pyrimidines are thymine and cytosine. RNA uses uracil in place of thymine. Adenine always pairs with thymine by 2 hydrogen bonds, while guanine pairs with cytosine through 3 hydrogen bonds, in each case because of the unique structures of the bases.