Mice That Resist Cocaine Addiction

The video explores two genetic mysteries: why birds lay eggs and the biology of addiction. It discusses viviparity as an evolutionary strategy and presents a study on Dinocephalosaurus, suggesting it gave birth to live young. The video also covers research on genetic predisposition to addiction, focusing on cadherins and their role in cocaine addiction resistance. The study found that mice with extra cadherins showed less tendency toward addiction, providing insights into potential genetic factors in addiction.

What was the unexpected finding regarding the genetically engineered mice and cocaine addiction?

What implications does the study have for understanding genetic predisposition to addiction?