The way in which monarch butterflies navigate from across the United States and Canada to central Mexico each year may not be a mystery anymore, according to a recent University of Washington led study.
The way in which monarch butterflies navigate from across the United States and Canada to central Mexico each year may not be a mystery anymore, according to a recent University of Washington led study.
A summary of the findings notes, "Monarchs use their large, complex eyes to monitor the sun's position in the sky. But the sun's position is not sufficient to determine direction. Each butterfly must also combine that information with the time of day to know where to go. Fortunately, like most animals including humans, monarchs possess an internal clock based on the rhythmic expression of key genes."
Thus, the researchers p
