According to the pedigree chart for an X-linked recessive disorder, the chance that the child would also be affected is 50%, the chance that the child would be a carrier is 25% and it it true that the child could be normal.
What is a pedigree chart?
- "A pedigree shows relationships between family members and indicates which individuals have certain genetic pathogenic variants, traits, and diseases within a family as well as vital status."
- It can be used to determine the inheritance pattern of disease with a family.
What is X- linked recessive disorder?
- "X-linked recessive inheritance refers to genetic conditions associated with mutations in genes on the X chromosome."
- As male have XY chromosomes, the recessive disorder will affect them whereas female have XX chromosomes, the mutation in any one of them would make them a carrier for that disorder. They are affected when their both chromosomes have recessive disorder.
The pedigree chart shown in the given diagram will explain the chances of children whether they would be affected, carrier or normal.
Hence, there is chance that 25% of them would be normal, 25% would be carrier and 50% of them would be affected.
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