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What Does It Mean to Say That a Genetic Marker

Question 68

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What does it mean to say that a genetic marker and a disease gene are closely linked?


A) The genetic marker lies within the coding region for the disease gene.
B) The genetic marker and the disease gene are in close physical proximity on the same chromosome and tend to be inherited together.
C) The genetic marker and the disease gene are on different chromosomes.
D) The DNA sequence of the genetic marker and the DNA sequence of the disease gene are nearly identical.

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