Study Confirms Male Driven Evolution

[Rich Travs]

http://www.sciencedaily.com/releases/2002/04/020412080629.htm

Researchers from the University of Chicago have estimated
that genetic mutations – the raw material for evolution –
occur 5.25 times more often in males than in females. This
discovery should lay to rest any doubts raised by recent
studies questioning the dominant role males play in producing
mutations for molecular evolution.

Their study, published in the April 11 issue of Nature, also
shows that these mutations are caused mainly by random
errors that occur during cell divisions rather than by
environmental factors.

This is why males are more aggressive - Post Mutation
Syndrome.

[Firstjois]

"Rich Travsky" <traRvskyE@hotMOVEmail.com> wrote in message
news:3CC018BD.6CA77BB3@hotMOVEmail.com...
:
: http://www.sciencedaily.com/releases/2002/04/020412080-
: 629.htm
:
: Researchers from the University of Chicago have estimated
: that genetic mutations - the raw material for evolution -
: occur 5.25 times more often in males than in females. This
: discovery should lay to rest any doubts raised by recent
: studies questioning the dominant role males play in
: producing mutations for molecular evolution.
:
: Their study, published in the April 11 issue of Nature,
: also shows that these mutations are caused mainly by random
: errors that occur during cell divisions rather than by
: environmental factors.
:
: This is why males are more aggressive - Post Mutation
: Syndrome.
:

Tsk, tsk, tsk. It probably shows that they Y chromosome has so
little information that errors occur very freely at no risk to
the offspring. A no-harm no-foul kind of thing.

Jois

[Buckland]

This isn't my field, so I apologize if this question seems
elementary or uninformed.

Many of the "molecular clock" articles that I've read deal
with the Mitochondrial DNA, passing intact (barring mutations)
from mother to daughter. If indeed the males are driving the
rate of evolution does this study, if confirmed, mean that
some of those studies may be overestimating times between
genetic splits? Or would the MDNA change rate give a good
clock even with changes at the 'Y'?

Buckland

"Rich Travsky" <traRvskyE@hotMOVEmail.com> wrote in message
news:3CC018BD.6CA77BB3@hotMOVEmail.com...
>
> http://www.sciencedaily.com/releases/2002/04/020412080-
> 629.htm
>
> Researchers from the University of Chicago have estimated
> that genetic mutations - the raw material for evolution -
> occur 5.25 times more often in males than in females. This
> discovery should lay to rest any doubts raised by recent
> studies questioning the dominant role males play in
> producing mutations for molecular evolution.
>
> Their study, published in the April 11 issue of Nature,
> also shows that these mutations are caused mainly by random
> errors that occur during cell divisions rather than by
> environmental factors.
>
> This is why males are more aggressive - Post Mutation
> Syndrome.

[Bob Keeter]

in article
XYUv8.93827$%l3.8016436@bin8.nnrp.aus1.giganews.com, firstjois
at firstjoisyikes@hotmail.com wrote on 4/19/02 8:29 AM:

>
> "Rich Travsky" <traRvskyE@hotMOVEmail.com> wrote in message
> news:3CC018BD.6CA77BB3@hotMOVEmail.com...
> :
> : http://www.sciencedaily.com/releases/2002/04/02041208062-
> : 9.htm
> :
> : Researchers from the University of Chicago have estimated
> : that genetic mutations - the raw material for evolution -
> : occur 5.25 times more often in males than in females.
> : This discovery should lay to rest any doubts raised by
> : recent studies questioning the dominant role males play
> : in producing mutations for molecular evolution.
> :
> : Their study, published in the April 11 issue of Nature,
> : also shows that these mutations are caused mainly by
> : random errors that occur during cell divisions rather
> : than by environmental factors.
> :
> : This is why males are more aggressive - Post Mutation
> : Syndrome.
> :
>
> Tsk, tsk, tsk. It probably shows that they Y chromosome has
> so little information that errors occur very freely at no
> risk to the offspring. A no-harm no-foul kind of thing.
>
> Jois
>
>

Well, looks like it the fate of the male to continually do the
dirty work, including being the guinea pig for prototyping any
progress for the species! As with many other things, I guess
we are just the "expendables" in the game of genetic
mutations. If this particular DNA diddle doesnt work, what the
hey, it was just another "Y" clensing the gerome!

On the other hand, there are few of the distaff variety that
would not grant us the differences! 8-)

Vive la diference! ;-)

Regards bk

[Firstjois]

"Buckland" <buckland@nosuchisp.net> wrote in message
news:sdZw8.107195$CH1.93773@sccrnsc02...
: This isn't my field, so I apologize if this question seems
: elementary or uninformed.
:
: Many of the "molecular clock" articles that I've read deal
: with the Mitochondrial DNA, passing intact (barring
: mutations) from mother to daughter. If indeed the males are
: driving the rate of evolution does
this
: study, if confirmed, mean that some of those studies may be
overestimating
: times between genetic splits? Or would the MDNA change rate
: give a good clock even with changes at the 'Y'?
:
: Buckland
:

Not my field either!

mtDNA clock tells time (to the best of our ability to
understand it) on its own.

The article most of us saw started out with diseases and
then to driving force of evolution. Seems like it
over-stepped a bit.

Jois

[Gordo]

Hmmm... I knew we were good for one thing at least.

"Bob Keeter" <rkeeter@earthlink.net> wrote in message
news:B8E60DC6.BD60%rkeeter@earthlink.net...
> in article
> XYUv8.93827$%l3.8016436@bin8.nnrp.aus1.giganews.com,
> firstjois
at
> firstjoisyikes@hotmail.com wrote on 4/19/02 8:29 AM:
>
> >
> > "Rich Travsky" <traRvskyE@hotMOVEmail.com> wrote in
> > message news:3CC018BD.6CA77BB3@hotMOVEmail.com...
> > :
> > : http://www.sciencedaily.com/releases/2002/04/020412080-
> > : 629.htm
> > :
> > : Researchers from the University of Chicago have
> > : estimated that
genetic
> > : mutations - the raw material for evolution - occur 5.25
> > : times more often in males than in females. This
> > : discovery should lay to rest any doubts raised by
> > : recent studies questioning the dominant role males play
> > : in producing mutations for molecular evolution.
> > :
> > : Their study, published in the April 11 issue of Nature,
> > : also shows
that
> > : these mutations are caused mainly by random errors that
> > : occur during cell divisions rather than by
> > : environmental factors.
> > :
> > : This is why males are more aggressive - Post Mutation
> > : Syndrome.
> > :
> >
> > Tsk, tsk, tsk. It probably shows that they Y chromosome
> > has so little information that errors occur very freely at
> > no risk to the offspring.
A
> > no-harm no-foul kind of thing.
> >
> > Jois
> >
> >
>
> Well, looks like it the fate of the male to continually do
> the dirty work, including being the guinea pig for
> prototyping any progress for the
species!
> As with many other things, I guess we are just the
> "expendables" in the
game
> of genetic mutations. If this particular DNA diddle
> doesnt work, what the hey, it was just another "Y"
> clensing the gerome!
>
> On the other hand, there are few of the distaff variety that
> would not
grant
> us the differences! 8-)
>
> Vive la diference! ;-)
>
> Regards bk
>

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[Bob Keeter]

in article uHpw8.369$Wn3.263092@newsfeed.slurp.net, Gordo at
gordsracing@yahoo.ca wrote on 4/20/02 6:48 PM:

> Hmmm... I knew we were good for one thing at least.
>

Yep. We die early if we stumble across some bad gene or
another! Purifies the species, you know! ;-)

Regards bk

[Gordo]

"Bob Keeter" <rkeeter@earthlink.net> wrote in message
news:B8E7A80C.BE93%rkeeter@earthlink.net...
> in article uHpw8.369$Wn3.263092@newsfeed.slurp.net, Gordo at
> gordsracing@yahoo.ca wrote on 4/20/02 6:48 PM:
>
> > Hmmm... I knew we were good for one thing at least.
> >
>
> Yep. We die early if we stumble across some bad gene or
> another!
Purifies
> the species, you know! ;-)

Not necessarily, take us for example :))

>
> Regards bk
>

---
Outgoing mail is certified Virus Free. Checked by AVG
anti-virus system (http://www.grisoft.com). Version: 6.0.350 /
Virus Database: 196 - Release Date: 4/17/02

[Bob Keeter]

in article 4EWw8.116$Fu3.108705@newsfeed.slurp.net, Gordo at
gordsracing@yahoo.ca wrote on 4/22/02 9:36 AM:

>
> "Bob Keeter" <rkeeter@earthlink.net> wrote in message
> news:B8E7A80C.BE93%rkeeter@earthlink.net...
>> in article uHpw8.369$Wn3.263092@newsfeed.slurp.net, Gordo
>> at gordsracing@yahoo.ca wrote on 4/20/02 6:48 PM:
>>
>>> Hmmm... I knew we were good for one thing at least.
>>>
>>
>> Yep. We die early if we stumble across some bad gene or
>> another! Purifies the species, you know! ;-)
>
> Not necessarily, take us for example :))
>

I was! 8-b

bk