DNA is structured as an antiparallel double helix, with two strands of nucleotides running in opposite 5’ to 3’ orientation. In DNA, adenine nucleotides pair with thymine nucleotides via hydrogen bonds (A-T), and cytosine nucleotides pair with guanine nucleotides via hydrogen bonds (C-G). In RNA, adenine pairs with uracil (A-U).
Standard detail
1.6.A.3
Depth 3Parent ID: 0064F09D0BFF47E19CAB4E1C6D11D6AFStandard set: AP Biology (2025)
Original statement
Quick facts
- Statement code
- 1.6.A.3
- List ID
- 3
- Standard ID
- 9053C364EF6A483EB51D824901C994FA
- Subject
- AP Biology
- Grades
- 09, 10, 11, 12
- Ancestor IDs
- 0064F09D0BFF47E19CAB4E1C6D11D6AF9C227FD53F184609993C4952BFF37140D627752BBDAB45E0986D583AED8C43BF
- Source document
- AP® Biology COURSE AND EXAM DESCRIPTION Effective Fall 2025
- License
- CC BY 4.0 US