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4.Principles of Inheritance and Variation
medium
Pedigree analysis is very important in human beings because
A
It helps genetic counselers to avoid disorders
B
It shows origin of traits
C
It shows the flow of traits in family
D
All of the above
Solution
The study of inheritance of genetic traits in several generations of a human family in the form of a family tree diagram is called pedigree analysis.
Advantages
$(i)$ It helps in genetic counselling to avoid disorders
$(ii)$ It shows the origin of a trait and flow of a trait in a family
$(iii)$ It is important to know the possibility of a recessive allele that can cause genetic disorders like colour blindness, haemophilia, etc. Signosed in the pedigree are
Standard 12
Biology
