Identical Twins

Is it possible to have identical twins and for them to have different blood types?
or to have different rh factors?

Tags: twins, Genetics, Pregnancy

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4 Comments Post a Comment

squee27

Nov 04, 2007

Identical twins always have the exact same genetic markers and the exact same blood type.

momof51982

Jun 06, 2008

I am haveing identical twins and it is very scary i am about 21 wks and a few days i lost my sone not even a year ago at 24wks he was alive for 24 days so this is all really scary anyone got any helping advice o ya there boys

revzora

Feb 20, 2009

To: anyone

are identical twins always the same sex?

iamthehighway

Mar 03, 2009

To: revzora

Identical twins are always the same gender, except in extremely rare cases where they have chromosomal defect.

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