What is the shape of a DNA molecule

Double helix with a sugar and phosphate backbone as well as complimentary base pairs

Answered by Biology tutor

2479 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

What is the difference between diffusion, osmosis and active transport?


Describe how a wave of excitation, which originates in the sinoatrial node (SAN) of the heart, eventually results in ventricular systole.


Can you explain the four levels of protein folding?


In a population of 1000 lemmings there are two alleles for skin colour, the dominant colour being cream (C) and the recessive being white (c). 350 individuals have white skin. Use Hardy-Weinberg to predict the number of homozygous recessive individuals.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning