Specifically, if the delayed S phase is caused by damage to DNA, does this mean that during the delayed part of the S phase there is no DNA synthesis whatsoever untill the DNA is repaired? I’m hearing differing accounts of this. Some text says DNA synthesis is attenuated when this happens, others, like wikipedia, say DNA synthesis happens before repair occurs:
"DNA repair is initiated following the completion of replication"
http://en.wikipedia.org/wiki/S_phase
If the answer to this question is yes, are there any cases where S phase is delayed due to DNA damage, but DNA synthesis still occurs during the delayed peroid?