How can identical twins be different?
identical twins can be different because they inherit different traits whille the sperm is being fertilized
Identical twins come from a single fertilized ovum, and are always of the same sex. Fraternal twins come from separate ova, and may be of different sex. Its ferternal. actualy, furturnal twins are normal. identical twins are rare. identical twins are twins that look axactly alike, and furturnal twins do not look the same.
Identical twins are the result of a single fertilized embryo splitting in two at an early stage and forming two viable embryos. As such, identical twins have identical DNA. Fraternal twins are the result of two distinct fertilized embryos being viable. As such, they have different DNA. They could even be different sexes.
Identical twins would look the same, fraternal twins could be of different sexes. In the womb, you can easily tell the difference between fraternal and identical twins because if the twins are identical, they will share the same sac. Fraternal twins will have different sacs. You can see this in the ultrasound. After birth, it is often very difficult to tell the difference between the two types of twins because babies often look alike particularly…
Monozygotic (Identical or Maternal) twins are identical because they came from the same egg and were split after conception but before fetal development. Identical twins have nearly identical DNA, however, environmental factors may switch genes on and off, differences are more pronounced as the twins age. Dizygotic (Fraternal) twins are not identical. They are as different as any other siblings.
What do you call identical twins that develop from two different eggs that are fertilized by different sperm?
No they do not. Identical twins have identical DNA structure, and therefore they have very similar cell structure, leading them to have vastly similar organs (same size, health issues, etc.). However, everyone, even identical twins, do not share the exact same organs. Some identical twins get migraines, while the other doesn't. In some cases, one twin will be homosexual and the other heterosexual. In any case, by nature, identical twins do not have identical brains…
Identical Twins Sometimes, after fertilisation, the fertilised ovum splits and divides into two balls of cells. Twins formed in this way are identical. They develop from the same ovum. Non-identical Twins Sometimes a woman's ovaries release two or more ova at the same time. If they all become fertilised, they all develop into babies. Twins formed in this way are non-identical. They develop from different ova fertilised by different sperms.
Identical twins have the same genotype because they have the exact same genes. Identical twins are formed when one fertilized egg (zygote) splits in two and each of the now two zygotes each develop into different beings. Identical twins are therefore referred to as monozyygotic twins and they have the same DNA.