George and arlene are married and have 4 children (tom, sam, wilma, ann). tom is married to sandra and have two children (daniel and alan). alan is married to tina and have a son christopher. ann is married to michael and have a daughter carla. **affected people with alkaptonuria are: arlene, tom, wilma, and carla** my questions are: does alkaptonuria appear to be caused by a dominant or recessive allele? what is george's phenotype? is is possible for daniel to have a child with alkaptonuria? explain. how would knowing the pattern of inheritance influence the treatment plan for this disease?

What effect do stimulants, such as cocaine, have on the nervous system? o a. stimulants change the activity of neurotransmitters. o b. stimulants mimic hormones and influence moods. o o c. stimulant|mchange how sensory information is processed. d. stimulants decrease brain activity.

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[120 total points] (public health) in one of the largest human experiments ever conducted, in 1954 a randomized controlled trial was run to see whether a vaccine developed by a doctor named jonas salk was effective in preventing paralytic polio. a total of 401,974 children (ages 6–9), chosen to be representative of those who might be susceptible to the disease, were randomized to two groups: 200,745 children (the control group c) were injected with a harmless saline solution (a placebo) and the other 201,229 children (the treatment group t) were injected with salk’s vaccine. what was the point of giving saline solution to the children who didn’t get the vaccine? explain briefly.