The "rungs" of the DNA ladder are made of what?
They’re made of the base pairs. When two strands of DNA form a double stranded helix - symbolised as a ladder in this case - a specific pairing of the four bases (adenine, guanine, thymine and cytosine) makes the ‘rungs’ of the ladder, while a sugar phosphate forms the backbone or the ‘rails’ of the ladder. Contact me for more questions!
Get an answer in 5 minutes from expert tutors at Oxford, Cambridge, Imperial and more.