Sure, if you even figure out that 'marked' is a condition in the first place. It certainly wasn't obvious to me when I first read those classes. Mostly because the wording is almost always on the form: "you mark the target", which is less suggestive of a condition than something like: "the target becomes marked"... or, heaven forbid, the use of the word 'condition' in those paragraphs. There's an art to writing reference books, and the 4E PHB doesn't practice it.
See, it is obvious if you take their advice and read the section on conditions, because it's all on the same page. But if you ignore their direct advice, and do not read the parts they directly reference, including conditions WHICH THEY MENTION YOU SHOULD READ, then the failure is yours.
'You should read this stuff.'
'No, I don't have to.'
'It has important information, including explanations of -that- page you have right there..'
'Nope, don't have to.'
'So, do you understand it?'
'Yep.'
'So you know how this works?'
'No.'
'It's in the part I suggested you read.'
'WELL YOU SHOULD HAVE TOLD ME!'
'I did, dumbass.'
If I had to read (read p 277) on every other power just to sate people who don't bother following advice, it'd be a horrible read.
Because it's ALWAYS (read p277) for conditions. And if you have to look one up, why, lo and behold, they are all there.