10 Across, where to find the X chromosome in male osier(5) SORRY NO LETTERS
12 Across, I am to leave long fellow for this shorter version(4) SORRY NO LETTERS
21 Across, It's pronounced "Port" ??I?
4 Down, Middle Easterner,with a follower,turned up early(7) B?T?M?R
Sorry,Ouzel,I didn't mean to correct you.Will(iam) is the correct answer .Either the compiler made a mistake or there's a person called William Longfellow