Do conjoined twins have identical DNA?

Hi laser1:

The short answer: 

Yes, conjoined twins have identical DNA. 

The longer answer:

Conjoined twins can only occur when monozygotic ("one egg" or
identical) twins occur. The conjoined part happens when the single
fertilized egg splits too late and fail to separate completely.

Since all identical twins have identical DNA, so do conjoined twins.
However, although their genetic material is the same,
identical/conjoined twins have different phenotypes - this means that
their DNA is expressed in different ways.


Sources: 

Twins - According to Anna Garvey
http://www.loyno.edu/~dorn/GSinterviews/twins.htm

Conjoined Twins
http://www.conjoined-twins.i-p.com/

Identical Twins
http://www3.cgodin.qc.ca/F.Prairie-Caron/Biological.htm

Do identical twins have identical DNA? 
http://ask.yahoo.com/ask/20010213.html

Identical twins have the same DNA
http://www.wonderquest.com/twins-dna.htm


I hope that this information has been of help in your search.
              
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Thank you.                    
                   
websearcher-ga                   
                   
                 
Search Strategy (on Google):            
  
"conjoined twins" "same DNA"
"identical twins" dna

Thank you sooo much. I appreciated the in depth response and the
helpful links as well!