Question: What is (are) Glucose-6-phosphate dehydrogenase deficiency ?
Answer: Glucose 6 phosphate dehydrogenase (G6PD) deficiency is a hereditary condition in which red blood cells break down (hemolysis) when the body is exposed to certain foods, drugs, infections or stress. This condition occurs when a person is missing or doesn't have enough glucose-6-phosphate dehydrogenase, an enzyme which helps red blood cells work properly. G6PD deficiency is more likely to occur in males, particularly African Americans, and those from certain parts of Africa, Asia, and the Mediterranean. This condition is inherited in an X-linked recessive manner and is caused by mutations in the G6PD gene. Treatment may involve medicines to treat an infection, stopping drugs that are causing red blood cell destruction, and/or transfusions, in some cases.
Source: GARD

Question: Is Glucose-6-phosphate dehydrogenase deficiency inherited ?
Answer: How is glucose-6-phosphate dehydrogenase (G6PD) deficiency inherited? G6PD deficiency is inherited in an X-linked recessive manner. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In males (who have only one X chromosome), one changed (mutated) copy of the gene in each cell is enough to cause the condition because they don't have another X chromosome with a normal copy of the gene. In females (who have two X chromosomes), a mutation would have to occur in both copies of the gene to cause the disorder. Because it is unlikely that females will have two mutated copies of this gene, males are affected by X-linked recessive disorders much more frequently than females. Fathers cannot pass X-linked traits to their sons.
Source: GARD