Answer:
Parallel cousins; incestuous
Explanation:
Parallel cousins are the cousins that have developed through either the sister of your mother or the brother of your uncle.
They are, in simple terms, the kind of siblings that belong to the same family.
Imagine your father has just one son, so your uncle will be your parallel cousin with boys, either a boy or a girl.
An incestuous relationship is one that involves sexual relations among two members of the same family, such as a father and daughter or a brother and sister.
