Final answer:
The exact odds of inheriting a dominant gene for Alzheimer's disease aren't provided among the options, as Alzheimer's genetics involve multiple factors that influence risk without guaranteeing the disease's onset.
Step-by-step explanation:
The odds that a person will inherit the dominant gene for Alzheimer's disease are not clearly stated in any of the given options (a. 1 in 1000 b. 1 in 100 c. 5 in 100 d. 1 in 10). Genetic risk factors for Alzheimer's disease, such as the variant of the apolipoprotein E (APOE) gene, increase the likelihood but do not guarantee that an individual will develop the disease. Alzheimer's disease has a genetic component, particularly the late-onset form, which is more common and likely also influenced by numerous genetic factors.
One particular variant of the APOE gene, known as E4, has been identified to increase a person's risk. However, this is not a simple dominant-recessive inheritance pattern, and the presence of risk genes such as APOE E4 does not ensure the development of Alzheimer's disease, meaning that risk genes do not guarantee that a person will get Alzheimer's disease.