When thomas hunt morgan crossed his red-eyed f1 generation flies to each other, the f2 generation included both red- and white-eyed flies. remarkably, all the white-eyed flies were male. what was the explanation for this result?

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?