Here's a breakdown:
* DNA: This is the genetic material that contains the blueprints for building and maintaining an organism. It's a long molecule that carries the genetic code in the form of genes.
* Genes: These are segments of DNA that contain instructions for specific traits, like eye color or height.
* Nucleus: This is the control center of a cell, and it houses the DNA.
* Embryo: This is the developing organism in the earliest stages of life.
Therefore, the nucleus of each cell in the embryo contains the DNA, which holds the instructions for building the entire organism.
