Question

it is very important plzz answer fast

Answer 1

it is very simple, the term metamorphosis is not used for human development because it used for insects. siblings resemble each other because they are reproduced by the same parents or genes.

Answer 2

At first it seems like kids from the same should look alike. After all kids get the genes from their parents. But brother and sister don't look exactly alike because everyone (inculding parents) has actually two copies of most of their genes and these copies can be different