How has your day been and How are you (๑>◡<๑)

I’m good, my day has been pretty fun. how about you :)

I have many assignments due tomorrow but other than that I am doing so good :)))

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.