A patient presented complaining of slurred speech and difficulty swallowing. The patient’s DNA was tested to determine the number of CAG repeats in the Huntington gene by PCR. The patient had 10–29 repeats. This result is interpreted as which of the following?

Trinucleotide repeat expansion diseases, such as fragile X syndrome, display what type of inheritance pattern?

Almost all sex-linked disorders involve which of the following chromosomes?

The mutation in Factor V Leiden involves

A deceased family member is indicated in a pedigree by which of the following?

How are transmission patterns determined?

Which of the following controls are critical for ensuring that amplification is occurring in a patient sample and that lack of PCR product is not due to the presence of polymerase inhibitors?

Amplification of the polA is highly indicative of which of the following?

Which virus does not share sequence homology with the others?

Which will change with environment and age?