What is the relationship between a mutation and a gene?

Question 2 options:

A mutation changes the sequence of DNA bases of a gene.

A mutation creates new genes from the same DNA segment.

A gene causes a mutation when it manufactures the wrong prote

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be