IMHO, the pros has already brought up there was no blood in the drains, thus no one showered after the murder. The water was noticed, point taken, pros said no blood evidence, now they say CY's dna. noted.
Still confusing there's no blood anywhere else in the house, downstairs especially, except for a little on the door-knob to the garage. But, that's part of the point, no blood on the way out of the house, no blood on anything JY, like car, clothes, suitcase, shoes, nothing.
No blood downstairs, no blood on JY, no one except MY and CY. Obviously whoever did this was able to get through the house without leaving a trace of evidence. Likewise, the fact there's NO evidence with JY, doesn't rule him out as a suspect.
The def, of course wants everyone to believe, because JY has no evidence, he's not guilty. But, there's also no evidence of anyone else, except JY.
Stand off. IMHO, now it boils down to how many coincidents occurred during that 24 hour period, that were, ...........unusual,............out of the ordinary,.........to have happened that COULD possibly point towards guilt? Then it's up to the jury, imho, to decide if they believe it points to JY.
JMHO
fran