what is pedigree analysis?
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Pedigrees are used to analyze the pattern of inheritance of a particular trait throughout a family. Pedigrees show the presence or absence of a trait as it relates to the relationship among parents, offspring, and siblings.
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- Pedigree analysis is a record of occurrence of a trait in several generations of a family.
- It is based on the fact that certain characteristic features are heritable in a family, for example, eye colour, skin colour, hair form and colour, and other facial characteristics.
- Along with these features, there are other genetic disorders such as Mendelian disorders that are inherited in a family, generation after generation.
- Hence, by using pedigree analysis for the study of specific traits or disorders, generation after generation, it is possible to trace the pattern of inheritance.
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