twins.

                                                            TWINS  



-How it happends?  

s.Twins hapend wen a  zigote starts to get sparate we now if  is one or two babys when it pases the thelve days after of fregnancy, if it pases 12 day and is´t monothigotic is only one babay ,but if it pases 12 day and it  the cigotic splitis in to two it will be 2 babys or more. Other posibility is that the zigotic stats to splits but not to much and then that means that you will have to babys that one part of the body will be conect. that case hapend one of 200 birhts normaly the division of the fetus .

-Different sex?

it is verry difficult have twins off oposite sex but it can be other posibility that is one of the babys have the sindrom of the turner and in this case one it can be girld and other boy

-How siames do things ?

they have to do all together and with specially help becuse is very difficult , wen you are adecuated tu that routine to them is much easier .

 twins

-When the babys are in the mother belly perfectly it can be two twins and one brother / sister.
-The twins have the same DNA but not the same digital foootmarck in the fingers.
-Now around the world are like 125.000.000 twins.
-They are not many posibilities but whit the invitro fertilizacion are cases of twins with 5 years of diference.