Q:

What does "fraternal twins" mean?

A:

Quick Answer

Fraternal twins, also known as dizygotic twins, occur when two separate eggs are fertilized by two separate sperm. This results in two babies who are not identical and who do not come from the same egg. Fraternal twins can consist of two girls, two boys or one girl and one boy.

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Full Answer

Fraternal twins are only as genetically similar as any set of siblings. Since they do not come from one egg as identical twins do, they have completely different DNA. Identical twins, or monozygotic twins, come from the splitting of one egg fertilized by one sperm cell. Because of this, identical twins share the same DNA.

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Related Questions

  • Q:

    What is the difference between paternal and maternal twins?

    A:

    Paternal and maternal twins, commonly known as fraternal and identical twins, are distinguished by the different ways the multiple pregnancy begins. Identical twins begin as a single zygote that splits into two or more developing embryos. Fraternal twins are usually the result of multiple eggs being present for fertilization.

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  • Q:

    What is the difference between identical and fraternal twins?

    A:

    Identical twins develop from one fertilized egg that splits into two parts, while fraternal twins are born from two different eggs and sperm cells. In both cases, the twins share the same womb and are usually born within moments of each other.

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    What does "metabolism" mean?

    A:

    According to the Merriam-Webster dictionary, "metabolism" is defined as the chemical process a plant or an animal uses to create energy needed for survival. Metabolism is responsible for everything from digestion to breathing and muscle movement.

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    What does "dilute" mean?

    A:

    "Dilute" generally means to make a liquid weaker or thinner by adding water or some other solvent to it. "Dilute" also means to lessen the depth of color in an object. Informally, it means to water something down.

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