The type of genetics that studies genes and chromosomes is called cytogenetics.

Here's a breakdown:

* Cytogenetics specifically focuses on the structure and function of chromosomes. It uses techniques like karyotyping to visualize chromosomes and identify abnormalities.

* Genetics is a broader field that encompasses all aspects of heredity, including the study of genes, chromosomes, and their interactions.

So, while genetics encompasses cytogenetics, cytogenetics is a specialized branch within genetics that deals specifically with chromosomes.