🌱 Biology

The "rungs" of the DNA ladder are made of what?

1 answers
Answered Oct 18Biology
Javier GeisExperienced Spanish and Maths tutor! Engineering @ Imperial College, W14-based.36 students helped

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!