Human Expansion Speculation

[ÅnÐReS]

Originally Posted by Timo

Yes, that is exactally what I meant. But why must I type all that when one word (de-isolationism) says it all?

I do think this is why if I look at my paternal grandfather, I see him to be a more extream version of Alpine than myself, yet I, his grandson, look rather alpinish, but yet less so than him, because I mixed with other blood, my mothers family and paternal grandmothers family. It seemed however, that his blood was more dominant for me, because I resemble him most of all of my relatives, him and my father - but mostly my grandfather. My father looks like he inhereted his mother's nose, where I inherited grandpa's nose, eyes, and skull shape.

And what about puberty changes?

I mean, until i got 12 or 13 years old i resembled my dad a lot - roundish head and face, a small nose and a stocky body - except for the hair colour, which was blonde in me. But then, my skull debrachycephalised extremately while i became much taller and thiner, and my nose got bigger as well. My iris has also changed being fully light brown while i was a kid, and being mixed green/brown at present. I bet those features came from my grandfather from mom's side. He had a long skull and long bones.

Being all those features in my gene pool, does puberty affect the phenotype too?
Or are the aforementioned chenges produced only as the result of me being the offspring of different White parents?

[Timo]

No, that's just you growing into your assigned "format," that was destined for you. I looked different as a kid, as did we all.

I was talking resemblence in Adulthood, not pre-pubesant.

[QVP]

Originally Posted by ÅnÐReS

And what about puberty changes?

I mean, until i got 12 or 13 years old i resembled my dad a lot - roundish head and face, a small nose and a stocky body - except for the hair colour, which was blonde in me. But then, my skull debrachycephalised extremately while i became much taller and thiner, and my nose got bigger as well. My iris has also changed being fully light brown while i was a kid, and being mixed green/brown at present. I bet those features came from my grandfather from mom's side. He had a long skull and long bones.

The brachycephalic genes are recessive. The dominant dolichocephalic genes are first expressed during puberty. Almost all children of dolichocephalic races have wider heads than the adults who express the primitive (proto-human) dolichocephalic genes.

The Alpish race-types are heterozygous for the progressive brachycephalic genes, so the elongation of the head-form is avoided during puberty.

Mass transportation reduces the frequency of expressed adult Alpish phenotypes drastically, as isolated communities of Alpish brachycephalic humans mix with dolichocephals having the dominant (primitive) alleles.

[Graeme]

I don't give a rat's arse, an Australian expression, about blond hair etc. And as a red haired person I resent being thought of as extreme or freaky. White blond hair is normal also, nothing extreme about it. I have to say that outside of children I have never seen people with what I would call White blond hair. It is an infantile characteristic. As for freckles, I have seen more freckles on darker haired people than on redheads, and blonds tend to have solid complexions of a hard to describe off white colour which tans well. True white skin is found only in a small part of Europe where blonds are not the norm.

[Gil]

White skin, like some people call it, is non-existant. What exists is a vast pallete of pigmentation, from deep pigmentation to very light pigmentation. Like QVP said, depigmentation is caused by the de-activation of genes in the Melanocortin 1 receptor (MC1R). The northern race-types lost their colour because the mutations in MC1R did not get purged by natural selection. It is a kind of non-dangerous degeneration, but it becomes a problem for them when they decide to settle in sunnier countries.
Hence, skin colour is always a progressive trait which is influenced by:

a) the environment
b) sexual selection

Bone development/shape is a whole different story but Agrippa is more able to explain that than me.