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  • Observe the given pedigree and choose the appropriate statements: <img alt="" src="https://cdn.entrance360.com/media/uploads/2020/02/05/x-linked-rec.png" style="height:170px; width:436px"

Observe the given pedigree and choose the appropriate statements:

1. The pedigree shows inheritance of X-linked recessive disorder.

2.  The genotype of II-4 is XX^{*}

3.  Hemophilia can be an example of this type of inheritance

4.  Individual 14 could be a carrier for the disease

Option: 1

1, 2 & 3


Option: 2

2, 3 & 4


Option: 3

1, 3 & 4


Option: 4

All of these


Answers (1)

best_answer

 

 

As we have already studied in determining the inheritance pattern of X-linked recessive disorder: -

 1. The pedigree shows inheritance of X-linked recessive disorder because an affected kid is born to unaffected parents and most of the males are affected.

2.  The genotype of II-4 is XX^{*}. She is a carrier female who has transmitted affected X-chromosome to one of the sons.

3.  Hemophilia can be an example of this type of inheritance. Hemophilia is an X-linked recessive disorder.

4.  Individual 14 could be a carrier for the disease because one of her male sibling is affected but both the parents are unaffected. It means the female parent is a carrier for the disease and Individual 14 could have received the affected X-chromosome from the mother.

Hence, all the statements are correct.

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Sayak

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