0
There are two way twins are formed. Twins can form by two eggs being released by the female and the sperm will fertilize both eggs. The other way twins can be formed is if one fertilized egg divides and forms two eggs.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agothere is no such thing as paternal or maternal twins. the only type of twins there are is fraternal, and Identical. Identical twins are the result of one sperm fertilizing one egg and that fertilized embryo splitting apart and forming two fetuses, therefore the children are born identical, and thus must be of the same sex. Fraternal twins are the result of two eggs being fertilized at the same time by two different sperm, and the children will be born different from the other. As a result, they can be male/male, female/female, or female/male. also there is a very slim chance that fraternal twins can have two different fathers, as it can take up to two weeks after having sex for a sperm to fertilize an egg. so if a female has sex with multiple partners, there is a very small chance that the two twins could be from two fathers. just to clarify... there is no such thing as paternal or maternal twins
Wiki User
∙ 12y ago2 sperate eggs get fertilized by 2 separate sperm.
Wiki User
∙ 13y agoSome times both ovaries produce individual egg. Then both ovum gets fertilized and Fraternal twins happens
Wiki User
∙ 13y agoFraternal twins or non-identical twins start as two separate eggs that are fertilized by two separate sperm. They have their own amniotic sacs and their own placentas.
Wiki User
∙ 13y agoThis happens when the egg fuses apart. With faternal twins two sperm must get to the egg before it has became fertilized.
Add your answer:
Earn +20 pts
How do you get identical and non identical twins?
Identical twins are formed when one fertilized eggs splits. Non-identical twins are formed when two separate eggs are fertilized.
Why are identical twins and fraternal twins not the exact same?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
Why are identical twins identical and fraternal twins are not?
Identical twins are formed from a single egg that splits into two. Fraternal twins are formed from two separate eggs that are both separately fertilized. So identical twins have identical DNA, and fraternal twins do not.
How fraternal and identical twins are formed?
Identical twins are formed when a fertilized egg splits in two and separates, creating two embryos. Fraternal twins form when two separate eggs are fertilized.
What is The scientific name for identical twins.?
Identical twins (monozygotic) occur when a single egg, fertilized by a single sperm, splits into two identical halves. Two separate babies with identical DNA are formed. Identical twins are always the same sex and blood type. http://www.twin-pregnancy-and-beyond.com/identical-twins-or-fraternal-twins.html
Twins formed by the fertilization of two ova by two sperm are?
They would be fraternal twins. Identical twins are created when one sperm fertilized one egg, and hat egg then splits in two. Identical twins are always the same gender, while fraternal twins can be either gender, or a mix of the two.
Why can fraternal twins be different genders but identical twins are are the same gender?
Identical Twins are the result of a single fertilized egg spliting in two producing two genetically identical children. Fraternal twins are the result of the mother producing two eggs each fertilized by a different sperm from the father. This can result in opposite sex twins.
How are twins born non-identical?
Non identical twins are formed when the mother releases two eggs and both those eggs are fertilised. hope this helps :)
Why are twins formed in one embryo?
Identical twins are sometimes formed when one egg after being fertilized by one sperm, divides into two halves.
Why do twins have the same faces etc?
Simply because identical twins have formed from the same egg. Their genetic make-up is identical - so their physical appearance is also the same.
Why are some twins identical and some not?
The reason why some twins are identical and some are not starts in utero. Identical twins occur when one egg is fertilized and it splits to create two embryos. Nonidentical twins come from different fertilized eggs.
What do twins have in common?
Identical twins are identical because they both came from the same egg. The term "Identical" is used as they look very much like each other and anybody can say that they are twins by just looking at them.
