The difference between fraternal twin brothers and identical twins creates a lot of confusion for those who don’t know the subject, some even think the two words are synonymous with twin brothers, but this is a mistake.
We will resolve this little confusion by denying some myths, clarifying the difference between fraternal twins and identical twins. First, let’s define each of the two types of brothers.
- Identical twin brothers.
- Also known as monocygotic or univiteline twins.
- Are those that form when a sperm fertilizes a single egg.
- This zygote (the egg attached to sperm) is part in two.
- Forming two embryos with the same genetic load.
- They are two identical brothers who were born at the same time.
The fraternal twin brothers, also called diigothic or bivitelin twins, are those formed by the fertilization of two eggs by two different sperm, so the result is two brothers who may be similar or very different, who were born at the same time.
One of the main headaches between those who want to differentiate fraternal twins from identical twins are physical differences or similarities between siblings. Identical twins, in most cases, are “identical”, i. e. they are virtually the same. This is because they share 100% of the genetic load, if they have physical differences it is due to external factors, such as scars or different hairstyles.
Fraternal twin brothers look as much like two ordinary siblings, they can have differences in size, complexion, physical structure, etc. In some cases, they can be very similar, as they share about 50% of genes, but never identical.
Besides, there’s a golden rule. If siblings have a different sex (boy and girl), they are necessarily fraternal twins. Identical twins are always of the same sex.
In the case of blood type, identical twins have exactly the same blood type because they share the same genetic load, while fraternal twins may differ in their blood type.
On the other hand, twins share many characteristics, but fingerprints are always different. Even identical twins do not have the same fingerprints because they are not only genetically determined, the design of the fingertips is made up of intrauterine forces during the gestation period.
In this way, the twins are not 100% identical, there are some differences, many of which are imperceptible to the naked eye.
Fraternal twins and identical twins have a special and special bond with each other. The two types of siblings tend to be much closer to each other than siblings born at different times. After all, they were born and raised together, so their bonds are unmatched.
As for your personality, it will depend on the type of creation. In the case of identical twins they tend to have complementary and even dependent personalities. It’s like they’re sharing everything between the two of us; one may have more motor skills while the other has more social skills, for example.
In the case of fraternal twins, their personalities will be different or similar depending on their physical resemblance. Education and the special relationship between the brothers must also be taken into account. Fraternal twins tend to have a personality more similar to other “common brothers. “, “but not as much as identical twins.
They can even invent a particular language to communicate (this can also happen between common siblings, but it is less common). This special language is known as cryptophasia. That’s why sometimes identical twins or fraternal twins take a little longer to talk than other children. .
Therefore, identical twins and fraternal twins can share certain afitions, tastes, and forms of social behavior; in short, they share many characteristics in common, especially when it comes to the psychological aspect.
Therefore, it is important to recognize the differences between the two terms. Identical or fraternal twin siblings will have characteristics that may be identical or different, such as the likelihood of sharing a particular disease.