GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2006-04 > 1144208472


From: "Jason S. Clary" <>
Subject: Re: [DNA] Fibonacci
Date: Tue, 4 Apr 2006 20:41:12 -0700


Oops.. I think that may have unintentionally come across the wrong way.

It's impressive that you noticed the connection between the situation and
the number. Good job. ;)

Not many people see patterns like that...

I'm still baffled why the slope of percentages of exact marker matches in a
reasonably random database tend to drop off with the addition of new markers
according to the Inverse Square Law. Excactly how does a physics law equate
to genetics.. ;)


----- Original Message -----
From: "Jason S. Clary" <>
To: <>
Sent: Tuesday, April 04, 2006 8:28 PM
Subject: Re: [DNA] Fibonacci


> It's not exactly a new idea... Leonardo of Pisa (a.k.a Fibonacci ~1200)
> used it to describe population growth and claimed it was "encoded in the
> ancestry of a male bee."
>
> The concept is the same in bees although for different reasons. An
> unfertilized egg hatches a male and a fertilized hatches a female so the
> males always have one parent and the females always two.
>
> That's why it's named after him and not the Indian mathematician Pingala
> Chhandahshastra in 500BC who first described it while investigating
> methods of bin packing. ;)
>
>
>
> ----- Original Message -----
> From: "John Lerch" <>
> To: <>
> Sent: Tuesday, April 04, 2006 8:13 PM
> Subject: [DNA] Fibonacci
>
>
>> Apologies for those who were confused about my discovery about the
>> Fibonacci sequence as it applies to the Xchromosome. I was behind in my
>> reading and so when I realized the Fibonacci nature and I recalled that
>> no one had mentioned it earlier when we were discussing the Xchromosome
>> contributions as breaking up more slowly than ordinary autosomal
>> chromosomes, I assumed that no one had noticed the Fibonacci nature. But
>> having gotten thru some more posts I saw AnnT quoting the correct numbers
>> and JohnC even giving the correct name of Fibonacci. Well it's still
>> cool to get to the finish line without any assistance.
>> JAL
>>
>>
>> ==============================
>> Search the US Census Collection. Over 140 million records added in the
>> last 12 months. Largest online collection in the world. Learn more:
>> http://www.ancestry.com/s13965/rd.ashx
>>
>>
>

This thread: