Which condition is referred to as Trisomy B in some contexts?

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Multiple Choice

Which condition is referred to as Trisomy B in some contexts?

Explanation:
Different naming conventions in cytogenetics can map the same condition to different labels. In some older sources, Trisomy B has been used to refer to Patau syndrome, which is caused by an extra chromosome 13 (Trisomy 13). So the label Trisomy B points to Patau syndrome. The other well-known trisomies—Down syndrome from Trisomy 21 and Edwards syndrome from Trisomy 18—are not referred to as Trisomy B in those contexts. Modern terminology usually uses Trisomy 13 for Patau syndrome.

Different naming conventions in cytogenetics can map the same condition to different labels. In some older sources, Trisomy B has been used to refer to Patau syndrome, which is caused by an extra chromosome 13 (Trisomy 13). So the label Trisomy B points to Patau syndrome. The other well-known trisomies—Down syndrome from Trisomy 21 and Edwards syndrome from Trisomy 18—are not referred to as Trisomy B in those contexts. Modern terminology usually uses Trisomy 13 for Patau syndrome.

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