Which of the following observations are not consistent with the idea that a dise

Question

Which of the following observations are not consistent with the idea that a disease is caused, at least in part, by genes? Select one: a. The disease tends to develop at a characteristic age (age of onset) b. Different populations tend to have the same frequencies of the disease. c. The human disorder resembles a genetic disorder that has a genetic bass in an animl Fraternal twins share the disease more often than identical twins. e. When an individual exhibits a disease, the disorder is less likely to occur in blood relatives than in the general population. f. The disease does not spr d to individuals sharing similar environmental situations. O g. A correlation is observed between a disease and a mutant human gene or a chromosomal alteration

Explanation / Answer

The options d and e are not consistent with the idea of a disease being a genetic disease.

As identical twin sharing the similar genetic make-up will have more chance of bearing the same genetic disease.

Also, when an individual exhibits a genetic disease, the disorder is more likely to occur in his blood relatives as that individual shares more genetic similarity to his blood relatives rather than other general populations and if that individual is showing the defective gene trait then there is every possibility that some of his blood relatives may also be predisposed to same genetic defect.

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