Have you had much experience with twins.
I know several twins, which are two offspring produced from the same pregnancy.
Yes, any idea how commmon they are?
It just depends on the area and genetics. Twins are either identical or fraternal.
What is a fraternal twin mean?
Fraternal twins are two eggs fertilized by sperm, where identical is only one zygote that splits.
Cool, that's good to know. Any other interesting facts?
The twin birth rate in the US has risen 76% from 1980 through 2009.
I wonder why that would happen.
Not sure. Perhaps fertility drugs. The Yoruba people have the highest rate of twinning, at 45-50 per 1,000 live births.