Hello. At our grandmother in 1947 boys of the twin were born but have died...

[Natasha]

Hello. At our grandmother in 1947 boys of the twin were born but have died in a month, and then at its or her daughter t. e. At our mum rodelis girls of the twin t. e. We, what probability at us to give birth to twins. Thanks.

[Nekrasova N.J.]

To risk to give birth twins at you it is high, above, than obshchepopuljatsionnyj.

[Talanova E.J.]

Natasha! You have not written, what you with the sister twins (odnojajtsovye or dvuhjajtsovye, t. e. "Identical" or simply "similar") and (if it is known) what "twins" were at the grandmother.

[Natasha]

Thanks that have responded. What we at the grandmother were she nepomnit, and with the sister dvuhjajtsovye, a difference in time 3 minutes

[Talanova E.J.]

Natasha! To specify probability of a birth of twins in your case (in percentage, for example) has to not enough sense as there are some ways of "calculation", or estimations, such probability, but whether give birth you (or the sister) twins, on this question digit in percentage will not respond. In your case, really, probability of a birth of twins it is significant above, than srednepopuljatsionnaja as has already responded N.J.Nekrasov. My question on WHAT you twins, not sluchaen (in your case your answer "raises or increases" this probability, that, however, does not mean, that each your labors will be resolved by twins). It is noticed, that factor of heritability (t. e. HEREDITARY, instead of the CASUAL nature) predispositions to a birth dvuhjajtsovyh twins noticeably above, than in case of odnojajtsovyh (where the factor of heritability can be neglected, t. e. It is process more casual).