________ are positively charged particles

Support for the theory that genes regulate aging is found in the

number of people born with Down syndrome. incidence of genetic diseases. death rate from Down syndrome. premature aging in Down syndrome individuals.

Kalika is told by her physician that her symptoms are caused by a loss of myelin. Her diagnosis would most likely be

A) Parkinson's disease. B) multiple sclerosis. C) early stage Alzheimer's disease. D) epilepsy.