# How can a family pedigree be helpful in determining the probability of having a child with a genetic disorder

Some genetic disorders that run in families such as muscular dystrophy, Huntington’s disease & sickle cell anemia. ChaCha! [ Source: http://www.chacha.com/question/how-can-a-family-pedigree-be-helpful-in-determining-the-probability-of-having-a-child-with-a-genetic-disorder ]

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**How can a family pedigree be helpful in determining the probability of having a child with a genetic disorder**“- How can family pedigrees be helpful in determining the probabilit…?
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- A pedigree analysis is taking into account the phenotypes (traits) of as many members of a family as possible. If a couple want to have a child but either one or both of their families have a history of a hereditary disease then a pedigree …

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- How can family pedigrees be helpful in determining the probability of having a child with a genetic disorder?
- Q: How can a family pedigree be helpful in determining the probability of having a child with a genetic disorder?
- A: A pedigree analysis is taking into account the phenotypes (traits) of as many members of a family as possible. If a couple want to have a child but either one or both of their families have a history of a hereditary disease then a pedigree analysis will give them a probability of having a healthy child, a carrier, or a sufferer, depending on the disease. For example a disease like cystic fibrosis is a recessive disorder. If the child to be had a grandparent on each side with the disease and a grandparent on each side that was clear, then both of the parents will be carriers and there is a 25% chance of the child having the disease, a 50% chance it will be a carrier, and a 25% chance it will be clear. The ratios differ from disease to disease and depending on the genotypes of the family. The different

- how can a family pedigree be helpful in determining the probability of having a child with a genetic disorder?
- Q: biology
- A: It allows you to see the possibilities of having a child with a genetic disorder. It can predict the outcome of either a 25%, 50%, 75%, or 100% chance of being born with a disorder. You’re able to see the patterns and notice who always seems to have the disorder, like just females or male, ect. A complete pedigree provides information about the biological relationships of individuals in the family, their medical history, the pattern of inheritance of a genetic disorder in the family, & which family members are at risk.