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Topic: Several questions on evolution, and mutation (rate)
Replies: 52   Last Post: Sep 8, 1996 9:44 PM

 Messages: [ Previous | Next ]
 KIRKX L AUGUSTIN Posts: 1 Registered: 12/12/04
Re: Several questions on evolution, and mutation (rate)
Posted: Aug 16, 1996 9:24 PM

Andrew Singer wrote:
> 1- How does someone determine how long it would take for a series of
> mutations to occur (all being presumably favorable mutations)?

Mutations occur on a cellular level very frequently (everybody has
thousands of little benign mutations like melanoma, etc.), but they are
only relavent when passed on, so the reproduction rate is all that
counts.

> 2- How accurate should one assume these calculations are?

We don't know enough about all the causes of mutations yet to be
accurate, and it is even harder to decide what is favorable. We only
recently approved research 40 years ago showing that viruses spice
snippits of genes from one organism to the next.

> 3- What is the latest estimate of the age of the earth, and consequestly the earliest life form?

Sorry, but I forgot. I think it is about 20 billion years though.

> 4- And since D.S. Ulam's analysis was done in 1967, would the almost
> certain difference in time be enough for his calculations to work (of
> course you'd have to know more specific info about his calculations to
> answer that question...is anyone familiar with them)?

Sorry again.

> 5- I'm aware that there is an "official" rebuttle to this book, do you
> know the name of it and or the author?
> Nope.

> Now I have a couple of questions that arose while reading other parts of the book.
>
> 1- Is it impossible to consider that the mutation rate might have
> decreased to its presently observed rate (as a result of any number of
> factors which you could come up with just as good as I)?

There is much evidence that radioactive mutations were much higher in the
past due to volcanic and meteroite activity. Also organism have
developed defense mechanisms that defend them from some virus caused
mutations.

> 2- That's enough questions for now...I have more, but I think I've taken
> up enough of your time.
>
> responses to my email address below.
>
> Andrew Singer
> asinger@oboe.aix.calpoly.edu

Date Subject Author
8/15/96 Andrew Singer
8/16/96 Lluis Ribas
8/16/96 Doug Yanega
8/17/96 Leonard Evens
8/16/96 KIRKX L AUGUSTIN
8/17/96 Leonard Evens
8/28/96 Brian Williams
8/29/96 Lauren Owens
8/18/96 Felix J. Thibault
8/20/96 Vincent R. Johns
8/23/96 Richard M Kliman
8/25/96 David Beorn
8/26/96 Vincent R. Johns
8/27/96 Steve McGrew
8/27/96 James Foster
8/29/96 David Beorn
8/30/96 James Foster
8/31/96 L.A. Moran
9/3/96 James Foster
9/4/96 L.A. Moran
9/4/96 James Foster
9/4/96 Ram Samudrala
9/4/96 James Foster
9/4/96 Ram Samudrala
9/5/96 James Foster
9/5/96 Ram Samudrala
9/6/96 James Foster
8/27/96 Joan Shields
8/28/96 Steve McGrew
8/29/96 David Beorn
8/30/96 Jerry Learn
8/31/96 Doug Easton
8/30/96 Larry Edwards
8/30/96 Doug Yanega
9/7/96 David Beorn
8/27/96 David Dixon
8/28/96 Dana Gourley
8/30/96 Herman Helmuth
9/6/96 Jerry Clark
8/22/96 Truett L Smith
8/28/96 Brian Williams
8/23/96 Karl
8/24/96 Steve McGrew
8/25/96 Arthur Chandler
8/21/96 vorsterd@iafrica.com
8/22/96 Anthony Campbell
8/22/96 Mary K. Kuhner
8/31/96 Arthur Chandler
9/4/96 David Wilson
9/6/96 Ram Samudrala
9/8/96 David Wilson