Question

Why is pedigree analysis done in the study of human genetics? State the conclusion that can be drawn from it.

Answer 1

Hint: Scientists use pedigree analysis in order to study the inheritance of genes in humans. A series of symbols are used to represent different aspects of a pedigree.

Complete Answer:
- Pedigree analysis is a graphical representation which shows the pattern of inheritance in a family.
- These are the charts that show the phenotype or genotypes for a particular organism and its ancestor from one generation to the next generation.

Need of pedigree analysis in human genetics:
- Pedigree analysis is used to study the inheritance of genes in humans from one generation to next generation.
- The study of pedigree is also important in predicting genetic risks.
- It is also used for predicting many genetically inherited disorders such as cystic fibrosis, sickle cell anemia, etc.
- It is also useful to find recessive and dominant types of traits.

Conclusions that can be drawn from a pedigree analysis:
- Pedigree analysis can trace the Mendelian disorders.
- It can conclude the pattern of inheritance. Pedigree analaysis tells us whether the trait is linked to the sex chromosomes or autosomes.
- Pedigree analysis also concludes whether the trait is dominant or recessive.

Note: Pedigree analysis helps scientists a lot in order to predict any genetically inherited diseases or disorder so that they can prevent the passage of disease to the next generation.