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Fraternal twins (and other multiples) occur when the female ovulates more than one egg at a time and more than one is fertilized. Females that are overweight or older are more likely to ovulate more than one egg at a time. Fertility drugs encourage the body to 'drop' more than one at a time. And the tendency can be inherited.
Wiki User
∙ 16y ago
Wiki User
∙ 13y agoIdentical twins are formed by chance, when a single fertilized egg(ovum) splits into two. Fraternal twins develop from two eggs fertilized by two sperm, and are just individual brothers or sisters (siblings), born at different times.
Wiki User
∙ 11y agoNon-identical twins occur when two separate eggs are fertilized by 2 separate sperm. This happens when the female's body prepares and releases 2 eggs during one cycle.
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When did Chronos Twins happen?
Chronos Twins happened in 2007.
When did Dracula Twins happen?
Dracula Twins happened in 2006.
When did Mega Twins happen?
Mega Twins happened in 1990.
When did Cool Croc Twins happen?
Cool Croc Twins happened in 1991.
Do twins have to run in both the parents side of the family in order for a couple to get pregnant with twins?
No. Twins happen randomly, but if there is a high number of twins in the family, you are likely to have twins.
What will happen if the fertilised egg splits into two?
You have twins.
Does twin telepathy happen in identcal twins more then fretenal twins?
I'm a identicle twin and so I think its more likely in identicle twins.
What might happen if an embryo did not completely split?
You will get conjoined twins.
What will happen if one sperm will fertilized two eggs?
You have twins
Can a chinchilla have a set of twins?
Yes. I own a set of twins. I believe that twins happen more often than in humans, but still uncommon. I can't remember where I read this.
Who are more likely to have conjoined twins?
This anomaly can happen to anyone, it is not genetic.
How often are conjoined twins born?
Conjoined twins are very rare, occurring in about 1 in every 200,000 live births. The exact frequency can vary by region and population.
