Why Is It Essential That Genetic Markers Used in Mapping

question 18

Multiple Choice

Why is it essential that genetic markers used in mapping disease genes be polymorphic?

• A) If the marker isn't polymorphic, its position cannot be known.
• B) If the marker isn't polymorphic, then it's impossible to use genetic mapping techniques to establish an association between the marker and the disease gene.
• C) If the marker isn't polymorphic, it cannot be physically linked to a gene associated with human disease.
• D) If the marker isn't polymorphic, then it will not be inherited in any predictable manner.

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Definitions:

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