The American Jett and Jax Salyers are officially cousins, but looking at their DNA would immediately say they are brothers. This can all be traced back to their parents, all four identical twins.
Let’s start at the beginning. Identical twin sisters Brittany and Briana met identical twin brothers Joshua and Jeremy Salyers a few years ago. They fell in love and got married. Just to be clear: Briana with Jeremy and Brittany with Joshua. Not much later, the sisters became pregnant almost at the same time and had their sons: Jax and Jett.
The nephews barely differ in age and also not in DNA. They are called quaternary twins. These kind of twins are not real twins as they both have different father and mother. But the parents are both identical twins.
What are the chances of getting pregnant with twins or multiples? Parents of Now explains.
The fertilization
Twins can arise in two different ways. For example, two eggs can be fertilized with two sperm cells. One speaks then of fraternal twins. Brianna and Brittany (as well as Josh and Jeremy) have identical twins. This means that one egg has been fertilized by one sperm cell. After fertilization, the egg divides in two, creating two different embryos.
These embryos have almost the same DNA because they originated from the same egg cell and sperm cell. For example, this ensures that these twins often look the same. In fraternal twins, the difference in DNA is just as great as in siblings. The only difference is that they are both the same age.
Quaternary twins can therefore never arise if two fraternal twins reproduce with each other. The DNA of both parents and the children differ too much. The fact that the DNA of the cousins Jax and Jett is so similar is purely because the DNA of the mothers and fathers is almost identical.
Instafamous
The fact that the DNA of Jax and Jett is not completely identical is because they originated from two different egg cells and sperm cells. And because both parents can have some minuscule differences. Yet it remains exceptional. And Jax and Jett’s parents are making good use of this. The so-called Salyerstwins now have more than 174,000 followers on Instagram. Here they share videos and photos about their family life. Which is also quite special, because both families live under the same roof.
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