Twin Similarities and Differences
Identical Twins, as known as monozygotic twins, are born just seconds apart and have shared genetics components. Even though they have the same genetics components there are some differences between them. Identical twins develop from a single egg and sperm combination that divide just a few days after the mother becomes pregnant. The identical twins DNA/genetic makeup would be almost the same which would eventually give the twins similar features when they are born. In addition, identical (monozygotic) twins ultimately be the same gender unless there was a mutation in the chromosome. In contrast, fraternal (as known as dizygotic) twins form when two different eggs are fertilized by different sperm in the same ovulation process. These twins are hardly alike, because they share only 50% of their genetic makeup.
People instantly think that if twins have the same DNA/genetics makeup all their features are 100% the same. It is true that features like hair, eye, and skin color are depicted by DNA, but they are only the external features. In other words, DNA cannot determine if both twins will like the same types of food, music, or intelligence factors. To simply tell the differences between twins, one must get to know them in person to tell their differences. Research has shown that "environment" will tell the differences between twins. By environments, the researches mean by the types of foods they eat, how much they sleep, their behaviors, and even their personalities. Some more differences consist of twins having different heights and weights, because both of those factors are controlled by what people eat and if they play any outdoor sports. There is one physical difference that all twins have that will never be the same. Identical twin finger prints might appear the same, but they have minimal differences in them. The reason fingerprints appear the same is because fingerprints are controlled by the twins' genes. In addition, scientists have recently discovered that each twin have different marks when they age. When the twins are born their DNA marks are almost the same to close to 99.99%, but as they get older the marks of their DNA are slowly becoming different. Furthermore, even if the identical twins are similar looking body parts such as noses and ears, they can also be different as well. For example, the twins' ears might be same but one of the twin's ears might be higher than the other. Even the nose could be not as straight as the other twin's nose. Therefore, positions of the body parts could differ but the appearance might still remain the same.
In conclusion, Identical Twins are not 100% mirror images of one another. To really know the difference between the twins one must know them in person to really see the differences between them. Just goes to show that all human beings are one of a kind.