Answer
Based on official Jordanian legal texts
DNA testing is technically a very powerful form of scientific evidence, and the Jordanian Sharia courts do use it in lineage cases — but understanding its precise legal place matters, to avoid misconceptions.
Its place within the methods of proof
Lineage in Jordanian law is established through the recognized routes: the marital bed (firash), acknowledgment (iqrar), and evidence (bayyina). DNA testing enters this framework as scientific corroboration and technical expertise the court uses to reinforce or weigh the evidence — particularly amid denial and missing documents. It is a powerful instrument inside the system of proof, not an independent substitute for it.
What that means in practice
- In a lineage claim facing denial: a positive result strongly supports the case within the totality of the evidence; the court decides whether to order the test and what weight it carries.
- In denial of paternity: the matter is far more constrained. Lineage established by the marital bed is protected by strict rules; negating it has its own narrow routes and conditions (such as li'an within its limits), and a settled lineage is not demolished by a test alone — protecting the child from belated challenges.
How it is done
The test follows a court decision, at accredited technical bodies, under procedures securing sample integrity and chain of custody; the result returns to the court for use in its ruling.
Bottom line
Yes — DNA testing plays an influential, often practically decisive role in establishing lineage, but it operates within the recognized methods of proof and the judge's assessment, not above them. Where it fits in your case's strategy is for a specialized lawyer to determine.
This is a general answer based on available Jordanian legal sources and does not replace advice from a specialized lawyer in an actual dispute.