The Crossword Centre Clue-Writing Competition

CCCWC October competition voters’ comments
 
Clue no. 17: Hugs and kisses when males become females, realizing it has its ups and downs

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A clue to YO-YO.
3 comments refer to this clue (from 3 competitors, 0 others)

Here is the text

Comments on the clue
1.Males usually have XY chromosomes and females XX, so shouldn't it be "when females become males"?
2.If this refers to chromosomes then X to Y (or rather XX to XY) is female to male
3.I really don't get this