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Multiple Choice
Which genetic elements would be most useful for determining the ancestry of an individual?
A
Ribosomal RNA gene expression levels
B
Somatic cell mutations
C
Mitochondrial DNA sequences
D
Epigenetic modifications
Verified step by step guidance
1
Understand that determining ancestry involves tracing genetic information passed down through generations, which requires stable and heritable genetic markers.
Recognize that ribosomal RNA gene expression levels reflect gene activity but do not provide information about inherited genetic variation useful for ancestry.
Note that somatic cell mutations occur in non-reproductive cells and are not passed to offspring, so they are not useful for ancestry determination.
Consider mitochondrial DNA sequences, which are inherited maternally and tend to have a higher mutation rate, making them excellent markers for tracing maternal lineage and ancestry.
Understand that epigenetic modifications can change during an individual's life and are not reliably inherited across many generations, so they are less useful for ancestry analysis.