Severity: Warning
Message: fopen(/home/answnniz/public_html/system/sessions/ci_session905a92f173ba48bbcb1f4b76b28dca58e648f86f): failed to open stream: Disk quota exceeded
Filename: drivers/Session_files_driver.php
Line Number: 176
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Severity: Warning
Message: session_start(): Failed to read session data: user (path: /home/answnniz/public_html/system/sessions)
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home/answnniz/public_html/index.php
Line: 315
Function: require_once
Briefly explain why a purine nitrogenous base on one strand of DNA must be paired with a pyrimidine nitrogenous base on the antiparallel strand of DNA in order for all the rungs to be equal in size.