GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2004-05 > 1083471741


From: "hamman" <>
Subject: Re: [DNA] Y-chromosome map
Date: Sat, 1 May 2004 23:22:35 -0500
References: <1d0.1fbd7da4.2dc54685@aol.com>


Yeah, I noticed that, too, right after I pressed send. I'll leave that to
the computer experts for now, someone with some time on their hands.

I also noticed there is a huge gap where no genes are listed, between
nucleotides 27.7 million and 49.7 million, pretty much the 2nd half of the
Y. Anyone know what's up with that?

.
----- Original Message -----
From: <>
To: <>
Sent: Saturday, May 01, 2004 1:29 PM
Subject: Re: [DNA] Y-chromosome map [number of genes]


> In a message dated 04/30/04 9:31:30 PM Pacific Daylight Time,
> writes:
>
> > Thanks John, that is an important distinction: number known vs. actual
> > number. I'll see if I can't find the actual nucleotide sequence to
really
> > address the question of number of STR markers on the Y-chromosome.
> >
> > http://www.ncbi.nlm.nih.gov/mapview/maps.cgi?ORG=hum&MAPS=ideogr,loc&;
> > VERBOSE=ON&CHR=Y
>
>
> You can download the sequence in chunks from a link on that page. You'll
see
> a list of "contigs" (short for contiguous) in varying sizes, with gaps
between
> them which have not been sequenced. They're in a form that you can scan
with
> a text editor, or if you do any programming, you can write a routine to
look
> for repeats (simple enough in concept, more difficult in execution). Such
> programs are already in use by researchers. It would probably be an
instructive
> exercise just to look for the STRs now in use, by searching the text for
the
> sequences used as primers
>
> http://www.cstl.nist.gov/biotech/strbase/y_strs.htm#Fact
>

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