Question

What is inside the cell nucleus ?

Answer 1

se encuentran los genes hereditarios (ADN)

Answer 2

It contains most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes.
The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell.