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What is pedigree analysis? Draw schemati...

What is pedigree analysis? Draw schematic representation of Autosomal dominant trait (Myotonic dystrophy).

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Analysis of traits in several generations of a family is called - pedigree analysis. It is utilized to trace the inheritance of specific trait, abnormality or disease.
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In the following pedigree chart, state if the trait is autosomal dominant, autosomal recessive or sex linked . Give a reason for your answer.

Read the following statements and choose the correct option. (i) In phenylketonuria the affected person does not secrete the enzyme to convert phenylalanine to tyrosine. (ii) The possibility of a male becoming haemophilic is extremely rare. (iii) Sickle cell anemia is caused by the substitution of glutamic acid by valine at the fifth position of beta chain of haemoglobin molecule. (iv) Myotonic dystrophy is an autosomal dominant trait.

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