How are fruternal twins formed?

Answer 1

Fraternal twins are produced when the female double ovulates and a different sperm fertilizes each egg. They can be the same sex or each a different sex. They are, of course nonidentical. There is a 1 in about 80 chance of a twin pregnancy although

the tendency runs in families. Identical twins are produced from a single fertilized egg that divides into two separate conceptus during early development.

Answer 2

In general, it is believed that having fraternal (dizygotic) twins can be genetic and that this predisposition can cause women to be more likely to release more than one egg at a time, offering the chance for more than one egg to be fertilized at a time. Other factors that can increase your chances of having fraternal twins include using fertility treatments and a mother being over 35-40 years old when she becomes pregnant.

Answer 3

Identical twins are when one egg in the fallopian tube is fertilized and then when it reaches the womb it splits into two eggs. Fraternal twins are made when two different eggs from each fallopian tube are fertilized at the same time.

Answer 4

Fraternal twins are formed when two separate eggs are fertilized by two different sperm cells. This results in two genetically unique individuals who are siblings born at the same time. Fraternal twins can be of the same gender or different genders.

Answer 5

Fraternal twins can occur when the mother's ovaries release two eggs at the same time instead of one. If the eggs are fertilized, then fraternal twin embryos will develop.

Answer 6

Instead of the egg dividing in two like with identical twins, two different eggs are fertilized and grow at the same time, but separately.