Determining a Genetic Basis for Male Stickleback Fish Brain Size

Brain size is widely variable among species, but its genetic basis is not well-understood. Stickleback fish brain images from an F2 generation of 80 males (descended from populations with different brain sizes) were measured for whole and regional brain size. Fiji software was used to conduct the measurements, which will be added to a previous sample of 80 brains to enhance the understanding of the genetic basis for brain size.