An advantage of prenatal diagnosis by genotypic analysis for hemophilia over phenotypic analysis is:
A) ABO blood type does not affect the analysis
B) A chorionic villus biopsy can be tested at 4 weeks gestation
C) Direct DNA diagnosis is available for all families
D) It can be done as a point-of-care test

Question

Quizplus · Accepted Answer

Genotypic analysis is not affected by ABO blood type, whereas phenotypic analysis might be influenced by factors like blood type.

An Advantage of Prenatal Diagnosis by Genotypic Analysis for Hemophilia