Board Thread:Manga/@comment-26495049-20161117013314/@comment-32349479-20170712080250

No, she wouldn't be able to turn into a Titan as she isn't an Eldian. For proof:

1. Only Eldians can be affected by the coordinate as shown when their memories were wiped.

2. The Asian Clan (they don't contain the gene, same goes for Marley) and the Ackermans (by-product of Titan Science, not true Eldian) are not of Eldian Descent, thats why the coordinate didn't work on them. So I assume that's why they were killed off as to prevent the "truth" from being revealed to the populace.

3. Mikasa is the daughter of an Ackerman and a woman from the Asian clan thus she doesn't have the genes necessary to transform.