The genes that regulate the involved in determining patterns of anatomical development are called homeotic genes.

Here's why:

* Homeotic genes are master control genes that determine the identity of body segments during embryonic development. They specify the fate of cells and tissues, dictating which structures will form in each part of the body.

* Mutations in homeotic genes can lead to dramatic changes in body plan, resulting in structures appearing in the wrong places (e.g., legs growing from the head instead of the thorax).

* These genes are often referred to as "selector genes" because they "select" the fate of a particular segment.

Let me know if you'd like to know more about homeotic genes or any other aspects of developmental biology!