What structure is present on the second cervical vertebra (c2 or axis) that allows you to rotate your neck to say "no?" what str
ucture is present on the second cervical vertebra (c2 or axis) that allows you to rotate your neck to say "no?" posterior tubercle transverse ligament body dens (odontoid process)?
The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.