Question

the twins were similar to each other in​

Answer 1

Answer:

➡Identical twins share all of their genes and are always of the same sex. In contrast, fraternal, or dizygotic, twins result from the fertilization of two separate eggs during the same pregnancy. They share half of their genes, just like any other siblings.

Answer 2

Answer:

$In \: very \: rare \: cases, \:  identical \: twins  \: can \: be  \: different \: sexes. \\ \: These \:  twins \:  begin \: as \:  identical  \: male \:  twins. \\ Like\: all \: males, \: they \: both \: have \: XY  \: sex  \: chromosomes, \: instead \: of \: XX \: like \: all \: females \: do. \\ Very \: soon \: after \: the \: egg \: splits \: in \: two, \: a \: genetic \: \\ mutation \: causes \: one \: twin \: to \: lose \: its \: Y  \: sex \:  chromosome, \: changing \: it \: to \: X0.$