Here's one regarding 2)
"However, all of the confirmed DNA components within this result match the corresponding components in the DNA profile of Madeline McCann.
LCN DNA profiling is highly sensitive it is not possible to attribute this DNA profile to a particular body fluid."
http://www.mccannpjfiles.co.uk/PJ/JOHN_LOWE.htm
That means nothing as all of madeleines components match her parents and other family members. Thats how inheritance works.