List the main classes of zygotic genes. What is the function of each class of these genes?

Key Concepts

Zygotic Genes

Zygotic genes are genes that are expressed after fertilization, playing a crucial role in the development of the embryo. They are activated in the zygote and contribute to the formation of various tissues and organs. Understanding zygotic genes is essential for studying early embryonic development and the genetic regulation of growth.

Classes of Zygotic Genes

The main classes of zygotic genes include segmentation genes, homeotic genes, and regulatory genes. Segmentation genes are responsible for dividing the embryo into segments, homeotic genes determine the identity of these segments, and regulatory genes control the expression of other genes during development. Each class plays a distinct role in ensuring proper embryonic patterning and organ formation.

Gene Function in Development

The function of zygotic genes in development involves regulating cellular processes such as differentiation, proliferation, and pattern formation. These genes orchestrate the complex interactions between cells that lead to the organized structure of the organism. Understanding their functions helps elucidate how genetic information translates into physical traits and developmental pathways.