Re: Yet another ID lie - Humans do evolve.

NashtOn wrote:
> Sla#s wrote:
> > Yet another ID lie - Humans do evolve.
> >
> > http://www.timesonline.co.uk/article/0,,2087-1880301,00.html
> >
> >
> > The Sunday Times November 20, 2005
> >
> > "Scientists show we've been losing face for 10,000 years
> > Jonathan Leake, Science Editor
> >
> > THE human face is shrinking. Research into people's appearance over the past
> > 10,000 years has found that our ancestors' heads and faces were up to 30%
> > larger than now.
> > Changes in diet are thought to be the main cause. The switch to softer,
> > farmed foods means that jawbones, teeth, skulls and muscles do not need to
> > be as strong as in the past.
> >
> > The shrinkage has been blamed for a surge in dental problems caused by
> > crooked or overlapping teeth.
> >
> > "Over the past 10,000 years there has been a trend toward rounder skulls
> > with smaller faces and jaws," said Clark Spencer Larsen, professor of
> > anthropology at Ohio State University. ...
> >
> > Charles Loring Brace, professor of anthropology at the University of
> > Michigan, said: "Human faces are shrinking by 1%-2% every 1,000 years.
> >
> > "What's more, we are growing less teeth. Ten thousand years ago everyone
> > grew wisdom teeth but now only half of us get them, and other teeth like the
> > lateral incisors have become much smaller. This is evolution in action."
> > ....
> >
> > ....................
> > Slatts
> >
>
> Firstly, wouldn't a changing diet account for this change and wouldn't
> this be acquired during the life of individuals?
>
> Secondly, can you please demonstrate what survival pressures made the
> individuals with more wisdom teeth/larger jaws and skulls die off in
> order for the wisdom toothless/small jaw and skull individuals to become
> predominant?
>
Sure. As people's jaws get smaller the likelihood of impacted wisdom
teeth increases, and before there was decent, safe dental surgery,
these people (who would be at their level of sexual maturity) would
have a higher risk of infection and death. Clearly over time there
would a selection for not having wisdom teeth.

.

Relevant Pages

  • Re: Yet another ID lie - Humans do evolve.
    ... >>> THE human face is shrinking. ... >>> crooked or overlapping teeth. ... >>> grew wisdom teeth but now only half of us get them, ...
    (talk.origins)
  • Re: Yet another ID lie - Humans do evolve.
    ... >> THE human face is shrinking. ... >> crooked or overlapping teeth. ... >> with smaller faces and jaws," said Clark Spencer Larsen, professor of ... >> grew wisdom teeth but now only half of us get them, ...
    (talk.origins)
  • Re: wisdom tooth
    ... born with wisdom teeth anymore because our jaws keep getting smaller. ... > Natural selection only affects that which would affect a species' ability to ...
    (sci.med.dentistry)
  • Re: Yet another ID lie - Humans do evolve.
    ... >> THE human face is shrinking. ... >> crooked or overlapping teeth. ... >> with smaller faces and jaws," said Clark Spencer Larsen, professor of ... >> grew wisdom teeth but now only half of us get them, ...
    (talk.origins)
  • Scientists show weve been losing face for 10,000 years
    ... Scientists show we've been losing face for 10,000 years ... THE human face is shrinking. ... crooked or overlapping teeth. ... skulls with smaller faces and jaws," said Clark Spencer Larsen, ...
    (soc.culture.indian)