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Archiver > DNA-R1B1C7 > 2007-06 > 1181303469


From: Edwin McAmis <>
Subject: Re: [DNA-R1B1C7] DNA-R1B1C7 Digest, Vol 1, Issue 18
Date: Fri, 08 Jun 2007 07:51:09 -0400
References: <d13.b63e075.339a06d8@aol.com>
In-Reply-To: <d13.b63e075.339a06d8@aol.com>


wrote:

>In a message dated 6/7/2007 8:26:25 P.M. Eastern Standard Time,
> writes:
>
>Thanks for your information, Eugene. I was rather surprised to learn
>that I am a member of the North West Irish haplogroup. But Turkish?
>Wow! That's far out.
>
>Ed McAmis
>Hi Ed
>keep in mind
> The first humans are thought to have arrived in Ireland only 9000 years ago
>(7000BC). Although, in that time, we have altered Ireland's landscape
>fundamentally, we have not come close to the same scale of changes that were
>wrought by the Ice Age.
>Ireland was at various times largely glaciated and completely land-locked as
>a part of the continent of Europe. For reasons not yet fully understood, our
>planet goes through cycles of warm and cool periods. The last cold spell
>began around 30,000 years ago and, in Ireland's neighbourhood, caused the Arctic
>ice to descend from the North Pole towards Europe. By 20,000 years ago
>Ireland was almost totally covered by a thick ice sheet stretching south-west from
>Scotland. Throughout this period the build up of ice on land across the
>world caused the sea level to drop. (_See map_
>(http://www.fortunecity.com/banners/interstitial.html?http://www.fortunecity.com/bally/sligo/93/past/pre_norman_hi
>story/iceage.html#map) .) By 20,000 years ago, it had dropped to a level 120
>metres (400 feet) below the level it is today. [2] This retreat of the
>waters meant that Ireland and Britain were once again joined together and joined
>to continental Europe. On average, 30 to 40km (19 to 25 miles) [3] of sea bed
>was exposed around the British Isles.
>
>Y-DNA haplogroup R is mainly represented in two lineages. Lineage R1a is
>thought to have originated in the Eurasian Steppes north of the Black and
>Caspian Seas. It is associated with the Kurgan culture, known for the domestication
>of the horse (approximately 3000 B.C.E.). This lineage is currently found in
>central and western Asia, India, and in Slavic populations of Eastern
>Europe. A well-known individual of the R1a lineage is Somerled founder of Clan
>Donald. Lineage R1b originated prior to the end of the last ice age where it was
>concentrated in refugia in southern Europe and Iberia and is the most common
>in European populations. It is especially common in the west of Ireland where
>it approaches 100% of the population. This haplogroup contains the Atlantic
>modal STR haplotype
> E.B Ashley
>
>
>
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>
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>
>
Thank you E. B. Ashley. You have summarized effectively a great deal of
recent learning about the movement of R1a and R1b populations. My
understanding is enlarged by your comments and PaulConroy's as well.

Ed

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