- Chances of having a twin pregnancy are increased by maternal age (30+).
- Fraternal twinning is genetically predisposed and the result of a woman releasing more than one egg at the same time.
- Identical twins are the result of a random split of a single egg and cannot be genetically predisposed.
- Male twins will not have twins unless their wives have the ability to produce two eggs.
- Identical twins share the same DNA but do not have the same fingerprints.
- 1 in 250 pregnancies can result in identical twins.
- 22 % percent of twins are left-handed compared to 10% in singletons.
- Vᴀɴɪsʜɪɴɢ ᴛᴡɪɴ sʏɴᴅʀᴏᴍᴇ- 15-20% percent of all twin pregnancies will ᴍɪsᴄᴀʀʀʏ ᴏɴᴇ ғᴇᴛᴜs.
- Once you have fraternal twins you are 3 to 4 times more likely to have another set!
- Nigeria has the highest rate of multiple births and more identical twins.
- A study shows vegans are five times less likely to have twins than women who consume dairy.
- Examining 3D ultrasound images, a study in Padova, Italy found fetuses start deliberately interacting at 14 weeks.
- 40 % of twins invent their own language.
- Over 50 % of twins are born before 37 weeks.
- The average birth weight for a twin is 5 lb 5 oz.
