Though all identical twins are formed very early in pregnancy, there’s some variation in exactly how early the fertilised egg splits into two. This may happen at the two cell stage on Day 2, the first blastocyst stage on Day four, or within the late blastocyst stage on Day 6. The stage when the egg splits into two can verify where the inseminated eggs can implant within the uterine wall. Once the embryo gets to the eight cells stage the foetal desoxyribonucleic acid takes over.
The stage at which the egg splits will determine if the babies have their own amniotic membranes and placenta or if they share. basically, the earlier the egg splits, the a lot of independent each twin will be by having their own amnion, chorion and placenta.
Early splitting additionally implies that the twins are perhaps less identical than those who separate at the late blastocyst stage. Around 1 / 4 of all identical twins are said to be mirror images of each other. this suggests that the left side of one twin precisely matches the right side of the opposite. how wonderful is that!
Although identical twins share the same dna and genetic coding, they’re still unique very little people. little variations separate them and although at birth they can appear as if little clones of each other, they’re far from it. As identical twins grow, their unique qualities (particularly in regard to their personalities) become more apparent. The surroundings during which they are raised as well as their own personalities help to form the adults they will become. this is exactly the same as any other baby born the planet over.