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  4. In humans, the condition hyperdactyly (the possession of twelve fingers) is determined by a dominant allele (H) and the normal condition by the recessive allele (h) The following diagram shows a family tree in which some members of the family are hyperdactylous <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/biology/46be34f3510aee62e0c6ff3b34213726-.png /> The genotypes of persons 1,2 and 3 in this family tree are 1 2 3 (a) HH Hh hh (b) HH HH hh (c) Hh HH Hh (d) Hh Hh hh

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Q. In humans, the condition hyperdactyly (the possession of twelve fingers) is determined by a dominant allele $(H)$ and the normal condition by the recessive allele $(h)$
The following diagram shows a family tree in which some members of the family are hyperdactylous
image
The genotypes of persons $1,2$ and $3$ in this family tree are
1 2 3
(a) HH Hh hh
(b) HH HH hh
(c) Hh HH Hh
(d) Hh Hh hh

Principles of Inheritance and Variation

Solution:

Correct answer is (d) d