sperm or egg egg or nerve nerve or muscle muscle or sperm
I am hesitating between 4 options to answer the following question, which option should I choose?
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?
Possibilities:
- sperm or egg
- egg or nerve
- nerve or muscle
- muscle or sperm

sperm or egg