- "Organs are made of different types of cellular tissues" is not relevant

- A sperm cell is a kind of sex cell
- An egg cell is a kind of sex cell
- A mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring
- Therefore, a mutation in sperm or egg of a parent can cause a new trait to appear in the parent 's offspring

Hence, a mutation in sperm or egg of a parent can cause a new trait to appear in the parent 's offspring
Question
An organism's traits are largely determined by the genetic makeup of its parents. A mutation in which kinds of cells in a parent could cause a new trait to appear in the parent's offspring?

Context
- A sperm cell is a kind of sex cell 
- An egg cell is a kind of sex cell 
- Organs are made of different types of cellular tissues
- A mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring