Re: Skin colour

Out of Africa is too simple. An individual can only have one mother,
but may have more than one Y chromosome donor.
Some hominids are thus hybrids with Neanderthal and Erectus.

The Inuit have lived in the arctic for 20ky without significant loss
of melanin.
Melanin is a hormone, and while the dynamics are not well undestood,
as the melanin level goes up in a gene pool so does the average
adrenalin level, and as a consequence of that, so does the level of
violence.

In the termperate zone of Asia & Europe, the necessity to stay inside
out of the winter demanded lower levels of violence which resulted
from cabin fever. This affected the melanin variety and level.

.

Relevant Pages

  • Re: Skin colour
    ... Melanin is a hormone, and while the dynamics are not well undestood, ... adrenalin level, and as a consequence of that, so does the level of ... out of the winter demanded lower levels of violence which resulted ... Melanin is a stress preventative ...
    (sci.anthropology.paleo)
  • Re: Skin colour
    ... The Inuit have lived in the arctic for 20ky without significant loss ... Melanin is a hormone, and while the dynamics are not well undestood, ... out of the winter demanded lower levels of violence which resulted ...
    (sci.anthropology.paleo)
  • Re: Skin colour
    ... Some hominids are thus hybrids with Neanderthal and Erectus. ... Melanin is a hormone, and while the dynamics are not well undestood, ... out of the winter demanded lower levels of violence which resulted ...
    (sci.anthropology.paleo)