This study wIll make you think twice about who you are getting into bed with.

These  days you have to be wary of who you sleep with as a study has shown  that women could potentially carry the DNA of previous partners.  A group of scientists has found out that a minority of women have  Y-chromosome gene sequences in their blood that men usually have. This  is significant find as it allows us to speculate as to how they managed  to get them.  Be careful who you sleep with  An obvious assumption to make is that from a pregnancy with a male son,  every woman would still carry those cells within her bloodstream.  Furthermore the conclusion from this is that these Y-chromosome cells  would reside within the mother's bloodstream for the rest of her natural  life regardless of miscarriage or termination.  Microchimerism is the medical term for this condition which got the name  after the mythical, monstrous Greek chimera that appeared to be three  animals rolled into one. A lion, snake, and a goat!  Sex transfers DNA of partners  A study then needed to be commissioned to understand if women without  sons could still be expected to carry y-chromosomes in their blood. The  study in question was conducted by immunologists at the Fred Hutchinson  Cancer Center who took samples from 120 women who had never given birth  to sons and found out that these women had 21% male DNA!  Sexual Baggage  The conclusion that was drawn from this study is that from intercourse  alone there is potential for women to hold onto male DNA from their  sexual partners for their entire life regardless of having more or fewer kids.