Twins: So Alike and So Different

What is it that has fascinated generations since the beginning of time almost twins? wherefore be they so special? In reality, twins are just like any other human being, just they are somehow treated differently than the rest of the world. many another(prenominal) sets of twins are used for research; scientists want to fall in sex about brain patterns between the twins. They want to know why people prefer their obligation overturn over their remaining, and vice-versa. In many ways, it seems like twins could answer many questions about life in general, but sometimes twins jumble these mysteries more than they resolve them (Fierro 1).
When it comes to the research on lateralization issues, at that place are many theories. Many people say hand preference is a genetic trait. Apparently, that is not the case. A firm survey of identical twins will confirm the discrepancy. Researchers have studied to find a genetic link. A Canadian study found that even when both parents are left handed, their offspring are more likely to be right handed (Fierro 1).
Another theory says that position in the uterus determines handedness. The ear that faces out of the womb receives the most input and stimulates tuition of the coordinating side of the brain. This would explain handedness in twins, since theyre likely to lie in opposing directions in the womb (Fierro 1).




duration all that is very interesting, it doesnt apply to all babies, so it couldnt be true, right? Well, another theory postulates that prenatal experience influences handedness, explaining that increase levels of testosterone exposure in the womb decreases festering of the left hemisphere of the brain. That would explain the higher incidences of left handedness in males, but also among multiples, since hormone levels are increased during pregnancy with multiples (Fierro 1). So if an answer to the question of handedness is needed, in that location are many theories that one can choose as their own, personal answer.
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