Final answer:
The eukaryotic organelle that contains chromatin and a nucleolus is the nucleus. It houses the genetic material and is responsible for producing ribosomes for protein synthesis.
Step-by-step explanation:
The eukaryotic organelle that contains chromatin and a nucleolus is the nucleus. The nucleus is often referred to as the control center of the cell as it houses the genetic material in the form of chromatin, which is composed of DNA and proteins. Inside the nucleus, the nucleolus is responsible for producing ribosomes, which play a crucial role in protein synthesis.
Learn more about Nucleus