What is the final step of protein synthesis? 1. DNA “unzips”
2. A protein is made
3. mRNA carries the RNA strand to the cytoplasm
4. RNA attaches to a ribosome

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.