Historically, Inhumans have selectively bred with each other to prevent unwanted mutations. But the Inhumanity storyline has shown us that there were Inhumans on Earth who never knew they were Inhumans.

It is fair to assume, then, that some Inhumans were breeding with regular humans.

How does Inhuman parentage work? Will the child of any Inhuman always be an Inhuman? Does it require both parents to be an Inhuman? Is it not guaranteed at all?

  • I don't think Inhumans born naturally in Marvel Cinematic Universe. – Captain Cold Mar 5 '15 at 14:43
  • The mists are required to activate the mutations and powers, but Skye is an Inhuman born of two Inhumans. – phantom42 Mar 5 '15 at 14:48
  • But, the Obelisk mist rewrote entire cells of body which made Skye Inhuman. – Captain Cold Mar 5 '15 at 14:54
  • Skye and Raina were only able to touch the Diviner without dying because they were Inhumans. – phantom42 Mar 5 '15 at 15:06
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    I can guarantee it if you’ve got the cash. PM me bro. – Paul D. Waite Aug 7 '15 at 12:52

TL;DR: No, you cannot always guarantee that even two Inhumans will have an Inhuman child, but it's likely. And simply having the Inhuman gene does not guarantee Inhuman abilities.

It's important to note that Inhumans are simply humans who carry the original genes added by the Kree millennia ago. Unlike the X-gene, which guarantees a mutation of some sort if active, the Inhuman gene merely makes a mutation possible when (and IF) the subject is exposed to Terrigen Mist. Conceivably, an Inhuman could live out their entire lives as a human, never being exposed to the mist, and never knowing their true potential. Granted, however, that even without the mist exposure, a person with the Inhuman gene would be a little faster, a little stronger - not enough to appear superhuman, but certainly enough to excel when they apply themselves.

To your question, however, there is always an amount of uncertainty when it comes to genetic heredity & selective breeding. If two Inhumans produce offspring, the odds are certainly good that the offspring will be Inhuman as well. If an Inhuman and a human breed, it would depend on whether or not the Inhuman gene is dominant, which is something that we don't know. Potentially, at least, either pairing could result in a human child.

UPDATE: The events of the Infinity arc revealed that there had been unknown tribes of Inhumans breeding with normal humans throughout history. These pairings resulted in both human AND Inhuman offspring, with the Inhuman descendants not realizing their potential until Black Bolt

detonated the Terrigen Bomb, thus activating their dormant Inhuman genes. Thousands of people all over the Earth fell into Terrigen-activated cocoons, emerging later as fully transformed Inhumans.

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  • “Unlike the X-gene” Totally unlike the X-gene! Completely different thing! Who are you calling? Seriously, there’s no need to get lawyers involved! – Paul D. Waite Aug 7 '15 at 13:05

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