Researcher roger sperry won a nobel prize for his research on epilepsy. sperry cut through the which joins the two hemispheres of the brain.

Corpus callosum

Explanation:

The cerebral cortex is a region of the gray matter of the brain and is present in folded form. The grooves between the folds form fissure. The longitudinal fissure of the cerebral cortex is the biggest one and separates the cerebrum into two cerebral hemispheres. Corpus callosum is made up of white matter. The two cerebral hemispheres are connected internally by the corpus callosum.  During his research on the treatment of epilepsy, Roger Sperry cut the corpus callosum.

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )