NEET Biology question

Select the incorrect statement regarding pedigree analysis.

(A)Solid symbols show unaffected individualsCorrect
(B)The proband is the person from which the case history starts
(C)It is useful for genetic counsellors
(D)It is an analysis of traits in several generations of a family

Answer: (A)

Solution

In standard pedigree notation, a solid (filled) symbol represents an *affected* individual, not an unaffected one — making statement (a) false. The proband (or propositus) is correctly defined as the individual through whom a family's case history is

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Question ID VK-120350