Gene expression is partly driven by protein content of cell. Heterokaryons are fused cells. For example, a non-differentiated human cell can be fused with a differentiated mouse cell. The proteins can be seen to affect the expression on the nuclei.
Concepts mainly based on Molecular Principles of Animal Development by Alfonso Arias and Alison Stewart. I'm a student interested in genomics and particularly developmental biology. Reading this book is a start. By writing about the concepts and diagrams in the book, it will help me in remembering the theories. Images from the book are available from the publisher's site (see Links)
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