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  4. Study the pedigree chart of a family showing the inheritance of myotonic dystrophy. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/biology/a3b80e051e5d147a1d831bc1732616d3-.jpeg /> The trait under study is

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Q. Study the pedigree chart of a family showing the inheritance of myotonic dystrophy.
image
The trait under study is

Principles of Inheritance and Variation

Solution:

Autosomal dominant trait can express its effect in homozygous as well as heterozygous condition.