What is the connection between Down Syndrome and Alzheimer's disease?

A neurologist examines a patient who cannot see despite any evidence of damage to the eye. The neurologist suspects the patient has brain damage. Which part of the brain would the neurologist hypothesize as the location of the damage?

a) hypothalamus b) parietal lobes c) corpus callosum d) occipital lobes

What is the stage that begins at about eight weeks after conception and continues until birth?

a) Zygotic stage b) Germinal stage c) Embryonic stage d) Fetal stage