I'm fascinated by subjects about twins. There's a reason. I'm a twin - a fraternal twin. Here I am with my brother many, many years ago.
Twin: one of two children born at the same time.
Seven different types of twins: Mirror Image twins. ... 2) Half-Identical twins. ... 3) Mixed Chromosome twins. ... 4) Superfetation. ... 5) Superfecundation. ... 6) Fraternal twins. ... 7) Identical twins.Mirror Image twins: monozygotic; formed from a single fertilized egg. When the split occurs late - more than a week after conception - the twins can develop reverse asymmetric features.
Half-Identical twins: a single maternal contribution to the twins but they had a mixture of two paternal contributions; two sperm involved but possibly only one egg.
Mixed Chromosome twins: This occurs if two separate sperms fertilize two separate eggs which
then fuse, producing individuals with different sets of chromosomes.
Some have been identified to have more than one distinct red blood cell