The results shown are from a DNA test for four genes used in a paternity identification case. DNA for the mother (M) and her child (C) are shown along with DNA from two possible fathers, F1 and F2. In the 'C' column, label the DNA bands contributed by the mother with 'M' and the DNA bands contributed by the father with 'F.'

As genetic testing becomes widespread, medical records will contain the results of such testing. Who should have access to this information? Should employers, potential employers, or insurance companies be allowed to have this information? Would you favor or oppose having the government establish and maintain a central database containing the results of individuals' genome scans?

Figure E.1 illustrates the results of an electrophoretic analysis of 13 CODIS STR markers on a DNA sample and identifies the alleles for each gene. Table E.2 lists the frequencies for alleles of three of the STRs shown in the figure. Use this information to calculate the frequency of the genotype for STR genes FGA, vWA, and D3S1358 given in Figure E.1.

Might it make sense someday to sequence every newborn's genome at the time of birth? What are the potential advantages and concerns of this approach?

Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?

DNA sequencing of a breast tumor reveals mutations in the BRCA1 gene.

Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?

ASO testing determines that an individual is a carrier for the mutant β-globin allele (βˢ) found in sickle-cell anemia.

Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?

Individual sequencing (personal genomics) identifies a mutation associated with Alzheimer's disease.

Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?

An adult diagnosed with Asperger syndrome (AS) has a genetic test that reveals an SNP in the GABRB3 gene that is significantly more common in people with AS than the general population.