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What is Pedigree Analysis? Suggest How Such an Analysis, Can Be Useful - CBSE (Science) Class 12 - Biology

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Question

What is pedigree analysis? Suggest how such an analysis, can be useful.

Solution

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. In this analysis, the inheritance of a trait is represented as a tree, called family tree. Genetic counselors use pedigree chart for analysis of various traits and diseases in a family and predict their inheritance patterns. It is useful in preventing hemophilia, sickle cell anemia, and other genetic disorders in the future generations.

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APPEARS IN

 NCERT Solution for Biology Textbook for Class 12 (2018 to Current)
Chapter 5: Principles of Inheritance and Variation
Q: 10 | Page no. 93

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Solution What is Pedigree Analysis? Suggest How Such an Analysis, Can Be Useful Concept: Genetic Disorders - Pedigree Analysis.
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