what is the difference between 2nd cousin and 1st cousin once removed

Question

what is the difference between 2nd cousin and 1st cousin once removed

In: Biology

Answer 1

I have two sisters, who married first cousins.

Each sister’s children are first cousins through their mothers.

Each sister’s children are second cousins through their fathers.

Each sister’s children are the nephews and nieces of the other sister’s husband.

Each sister’s children are the first cousins once removed of the other lot’s father.