Why might a lab worker attempting to diagnose a genetic disorder prefer to work with photographs of chromosomes rather than the chromosomes themselves?

A lab worker might prefer to work with photographs of chromosomes, known as karyotypes, because they provide a clear, organized visual representation that allows for easier analysis and comparison. Photographs facilitate the identification of chromosomal abnormalities, such as aneuploidies or structural alterations, without the challenges of manipulating live cells. Additionally, karyotyping can be done more efficiently and reproducibly than working with the chromosomes directly, which can be delicate and prone to damage.