They are no more
alike than any sibling set, sharing about 50 % of their genetic markers in a unique combination of genes from both parents.
Not exact matches
To celebrate World Down Syndrome Day,
siblings Lauren and Paul Costabile produced the short video below, called «More
Alike Than Different.»
Fraternal twins come from two eggs that are fertilized by two separate sperm and are no more
alike than other
siblings born to the same parents.
But I came to understand two things: for one, many
siblings close in age are sometimes dressed exactly
alike, especially «Irish Twins» (
siblings born less
than one year apart).
Sometimes they look exactly
alike — identical — and sometimes they don't look any more
alike than typical
siblings — fraternal.