Variegation

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderators: Leonid, amiradm, BioTeam

Post Reply
Lucanus cervus
Garter
Garter
Posts: 27
Joined: Thu Dec 06, 2007 1:53 am
Location: Zele, Belgium

Variegation

Post by Lucanus cervus » Tue Jan 11, 2011 9:17 am

Hi,


Does somebody know how you can determine wether variegation is caused by transposon insertion or transposon excision?

It would be of great help

greetings,

Sam

User avatar
JackBean
Inland Taipan
Inland Taipan
Posts: 5694
Joined: Mon Sep 14, 2009 7:12 pm

Post by JackBean » Tue Jan 11, 2011 9:25 am

I would guess rather insertion. But theoretically, if you had embryo with inserted transposon and it got excised in part of cells, you could get it too... (but kind of reversed)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

magicsiew
Coral
Coral
Posts: 145
Joined: Sun Jan 24, 2010 3:07 pm

Post by magicsiew » Tue Jan 11, 2011 2:43 pm

Insertion, transposable elements can regulate genes epigenetically, when inserted within or very close to them... Much example can be found on RNAi..

Lucanus cervus
Garter
Garter
Posts: 27
Joined: Thu Dec 06, 2007 1:53 am
Location: Zele, Belgium

Re: Variegation

Post by Lucanus cervus » Tue Jan 11, 2011 7:28 pm

My book (Introduction to genetic analysis, Griffiths et al,9E) says both can be the cause, and exactly in the way Jackbean says.

But our professor gave a list with possible questions for my genetics exam and one of the questions is:

"how can you determine wether a variegation is caused by a insertion or rather an excision"


I think I know sort of what she means but I can't put it into words

User avatar
JackBean
Inland Taipan
Inland Taipan
Posts: 5694
Joined: Mon Sep 14, 2009 7:12 pm

Post by JackBean » Wed Jan 12, 2011 3:09 pm

so, what's your though?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests