Can genes predict foreign language learning skills?

Anne Merritt:

Every frustrated language learner has, at some point, proclaimed that they just “don’t have the gift” of picking up foreign languages.

It’s easy to imagine that the aptitude for learning a new tongue exists somewhere beyond our control, perhaps in our blood or brain chemistry, or in the drinking water that flows through Northern Europe and feeds the frustratingly fluent English-speaking Scandinavians from Oslo to Helsinki.

Language teachers will explain to students that anyone can learn a foreign language, and that the skill comes from nurture and not nature. But does biology play any role at all? Is there any part of our DNA that can predict whether or not we can be successful polyglots?