Which of the following is not true about genes?
they are passed down from your ancestors.
they contain instructions for your physiology and behavior.
some people are born with an entirely new set of genes not seen in their parents.
some parts of your genes can become different from your parents as you are forming.

The answer is C. Some people are born with an entirely new set of genes not seen in their parents. (This one is not true because we do see genes inherited/seen from our parents. For example, if our parents have brown eyes, we can have brown eyes, or same thing with hair, if our parents have brown hair, we can inherit/ be seen having brown hair just like them, we inherit genes similar to our parents because they made us, in turn, they gave us some of their features and genes.)