Oh yes it does! I never dreamt I would become pregnant with twins. There are no twins in my side of the family. None that I know of. However, at my baby shower, I found out from my boyfriend's family that there were at least 4 sets of twins in his family; his grandmother had twins, his grand aunt had 2 sets of twins and his cousin had twins.
It's amazing how science doesn't know everything because my high school friend had fraternal twins and when she found out I was having identical twins she told me that that wasn't hereditary, but obviously it is after learning my boyfriend's family's history.
There are some fertility treatments that can increase a woman's chances of having twins. However, there is no medicine that one can take to guarantee that they would give birth to twins.
Overall chances of your having twins are about 3.2%. According to several sources, here are some factors in increasing your chances of having twins: You are over 45 (17% of women over 45 have twins). You have twins in your family on your mom's side (17%). You are African-American. You have been pregnant before. You have had twins before (12%). You are undergoing fertility treatment. You are overweight. You are tall.
its not likely that you will have twins then... normally you will not have a chance of having twins unless your mother side of the family has a history of twins it matter if you dads side does or not and also if you are over the age of 35 years old. Most likely if your siblings are twins the there is a possibility that they them selves or their children will have twins..
The only coin evolution pays in is reproductive success. Having two children who leave no offspring would not give you an advantage over having one child who leaves many offspring. Or any combination thereof. Twinning is a developmental thing of egg doubling or fraternal twins being just like siblings. So, the act of twinning would not seem to confer any more advantage in and of itself, but twins having successful offspring that drive many parental genes to fixation in a population of organism would be reproductively successful that way.
I dont think those two topics are linked together in any way and if your having periods you might not be pregnant, though some women do have periods during pregnancies
the chances of something going wrong with your plane is about 1 to 11%
Well, if 10% is the right percentage, and some studies say it is, then the chances are about one in ten.
To increase the chances of survival of the species
... Well, when a man and a woman love each other very much, they get certain urges... Is you question can you influence the gender of your baby? If so, some people believe you can increase your chances of having a boy by having sex at certain points in the ovulation cycle.
Typically 1-2 Babies (kids) .Not uncommon to have 3 kids, some will give birth up to 5 kids.
Identical twins born with their bodies joined at some point and having varying degrees of duplication, a result of the incomplete division of the zygote from which the twins developed. Also called diplosomia.
... Well, when a man and a woman love each other very much, they get certain urges... Is you question can you influence the gender of your baby? If so, some people believe you can increase your chances of having a boy by having sex at certain points in the ovulation cycle.