-In a Disease Associated with a Nucleotide Repeat,anticipation Is Often

-In a disease associated with a nucleotide repeat,anticipation is often noticed in subsequent generations,usually associated with a more severe phenotype.Which of the following is a more likely cause of anticipation?

A) There is more frequent unequal crossing over.
B) Subtle phenotypic nuances are more often sought by a physician.
C) Family members are exposed to the same mutagens.
D) Highly repeated sequences are expressed more often.
E) The sequences have greater stability in later generations.

Correct Answer:

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