FamilySearch does not use DNA at this time. As for transferring family trees, remember Familysearch Tree is a universal tree. It is highly likely your family members are already in the tree.
FamilySearch does not provide that service.
there is a Community Group that does discuss the topic of DNA & Genetics
You may wish to join their group.
For starters ...
Regarding, DNA; and, 'FamilySearch' ...
Short Answer: We CANNOT 'Upload' DNA Data into 'FamilySearch'.
Here is a "Knowledge Article" in 'FamilySrach':
Using DNA in family history research
Where, among other points, it states:
Nor does our Family Tree provide specific features to post or link DNA groups based on DNA matches.
I know this does not help; but, I hope it gives you some perspective and other options
That said ...
Here are some helpful articles and lessons regarding DNA found in 'FamilySearch' ...
DNA testing. What is it, and how can you benefit from it?
Through the aforementioned ...
... Which DNA test options are available?
... Already taken a test? Next steps?
... FAQ / Terminology
DNA: AN INTRODUCTION TO GENETIC GENEALOGY, 6 LESSONS
DNA: An Introduction to Genetic Genealogy
DNA: I'VE TESTED, NOW WHAT?, 6 LESSONS
GeneTech: YDNA Solutions to Common Genealogical Problems
All that ...
As an aside ...
I am "Tagging" this general 'Question' of yours in this "Community.FamilySearch" Forum, to two (x2) specific 'Groups' in the Forum being:
(1) "Genetic Genealogy Research"; and,
(2) "Genealogy and the Y Chromosome",
in the hope that, the members of those groups may be able to answer/assist you.
Both those Groups are "Public", which you can join, if you wish.
@Genetic Genealogy Research
@Genealogy and the Y Chromosome
About YOUR 'Tree' in "Ancestry_com" (or, anywhere else for that matter) ...
You most likely DO NOT need to 'Transfer' YOUR 'Tree' in "Ancestry_com" (or, the like) with/into "Family Tree" of 'FamilySearch'.
Please let me explain.
Most new (and, some old) Users/Patrons DO NOT understand the basic nature and premise of "Family Tree" of 'FamilySearch', when they join in.
We do not have our OWN "Tree" in "Family Tree" of 'FamilySearch'.
We ONLY have "Branches" (ie. Ancestral" lines), that are interconnected, in this SINGLE "One" World "Tree", for all of us, that is "Family Tree" of 'FamilySearch'.
"Family Tree" of 'FamilySearch' is NOT like 'On-Line' "Websites" (eg. "Ancestry_com"; or "MyHeritage_com"; or, the like); and/or, 'standalone' personal (computer) programmes (eg, the OLD, now no longer supported, "PAF"; or, "Ancestral Quest"; or, the like).
We DO NOT have "Private"/"Personal" 'Trees' in "Family Tree" of 'FamilySearch' like other 'On-Line' "Websites"; and/or, 'standalone' personal (computer) programmes.
We do not even, own; or, manage; and, are NOT even responsible for, the "Deceased" individuals/persons in "Family Tree" of 'FamilySearch'.
And, in fact, we do not even, own; or, manage; and, are NOT even responsible for, our OWN "Deceased" Ancestors in "Family Tree" of 'FamilySearch'.
"Family Tree" of 'FamilySearch' is built on a "Open Edit" Platform - hence, why any registered User/Patron can "Edit" (ie. Add, Delete; and/or, Change) ANY "Deceased" individual/person in "Family Tree" of 'FamilySearch'.
I hope this helps.
"Ancestry_com" is a "Family Tree Management" programme that is one of the "Third Party" Applications that is "Certified" to work with "Family Tree" of 'FamilySearch' that has an INTERFACE that works/connects (directly) with "Family Tree" of 'FamilySearch' that can, "Download"; and, "Upload" (ie. "Transfer) between the "Third Party" Application and "Family Tree".
You may be able to link/connect your "Ancestry_com" Account, with that, of your 'FamilySearch' Account, to effect the aforementioned.
You can INITIALLY enter (ie. 'Create') the FIRST few individuals/persons into "Family Tree" of 'FamilySearch' one at a time - on a one by one basis.
It is most likely that many of the individuals/persons in your 'Tree' in "Ancestry_com" ALREADY exist in "Family Tree" of "FamilySearch".
It is most likely that ONLY one or two generations of the "Living" (and, just some of the "Deceased") individuals/persons may be required to be entered/input in "Family Tree" of 'FamilySearch'; before, some of the "Deceased" individuals/persons from your "Ancestral" lines ALREADY existing in "Family Tree" of 'FamilySearch', are located/discovered.
Use the "Find" facility/function/feature to Search "Family Tree" of 'FamilySearch', you may be surprised to find some (if not, many) of your "Ancestral" lines ALREADY existing in "Family Tree" of 'FamilySearch'.
I hope this gives you some perspective.