Elf-Human-Hybrids

While you're busy moving (no worries there, I know how chaotic that is) I've dug into genetics and came up with some more detailed two-cents.

First of, gestation time seemed to be orientated at the mothers race, so it would probably be around a year – if it's a human mother. With an elf mother, it might work out different, but I'd like to point out, that birth could be impossible because of the childs size. Just referring to this picture link if you want to cross-breed your house cat with a lion, that's easier than crossing a tiger and a lion – in matters of genetics. Nature prevents the former from happen because of the size difference. I'd guess the same would go for elves and humans, preventing a pregnancy entirely or only with a human mother unless they are more similar in height.

For appearance, I found some nice existing mutations as reference and quite interesting facts – everything open for own interpretation of course.
Number of fingers is something I haven't mentioned before, but the question is there: how do you mix four and five fingers? Genetics say, that it's way easier to add fingers than to delete them. Also, a additional finger appears mostly opposite of the thumb, fitting into the general layout of the hand, while missing fingers are often the ones in the middle, creating a claw-like result. The fingers can vary from nub to stump to missing joints/nails to fully formed, BUT: they are not functional. Cases where additional fingers could be moved intentional are rare, since you have to alter the whole layout of the arm to get nerves and muscles working. So, for half-breeds: five fingers, but can't move the little one.
Ears are easier – as it seems, there is a mutation called “Darwins Point”, which basically tells us, that about 10 percent of the humans already have pointed ears. Not like Spock, but visible. With elves genes intertwining, it shouldn't be difficult to get pointy ears of any degree as a result.
With eyes, I wondered if elves have near/far-sightness as in “do they need glasses”? It's not about elves, but my half-breed will have glasses and I need to know if he needs them or if they are part of a disguise Basic idea is, that if elves have eyes that are adapt to a different size than humans in relation, a mix of both could result in either.
That the limps are most likely not in the right proportions stays as a basic. For reference, there is the Marfan Syndrom, which results in longer arms and fingers as well as a tall and narrow build – not elven slender and graceful, but wronged. Throw in different leg length and maybe twisted bones inside and you get the picture. No ones talking about Quasimode running around, but personally I think there should be something that seems off. (not considering clothes that hide or correct some of these features). I'd even opt for juvenile rheumatism, as things that grow wrong likely hurt in the process.
Melanin production is something else I've stumbled upon, albeit more a case of fun extra than direct result of cross-breeding. But I think, if you mix some genes that are not entirely comparable, there might be different results across the body (and it's one of the things that's not life threatening). So, just look up Vitiligo (parts of the skin start to loose colour), Poliosis (single strand of hair that is white) or my favourite: linear and whorled nevoid hypermelanosis (swirling streaks of darkened skin)

With all this, I got another problem – if you got someone who looks like a human, behaves like a human, wears human clothes, speaks human language... why should any elf belief him to be anything else but a human? Best option seems to be a Soulname and capability of sending, but I'm not sure if a (half)elf would give his Soulname open to strangers just to prove a point.
And, still, no answer to the whereabouts of magics genetic base.

Going through the old OOC-posts on the forum and archiving the discussions that are done and/or old. Can this be locked Flint?