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Principles Of Inheritance And Variation

Question

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The absence of which clotting factor leads to haemophilia-A?

Factor VII

Factor VIII

Factor IX

Factor X

Solution

B.

Factor VIII

Haemophilia-A is characterized by lack of antihaemophilic globulin (factor VIII). Haemophilia is caused due to X-linked recessive gene.

Some More Questions From Principles of Inheritance and Variation Chapter

Name the plant that shows incomplete dominance in respect of the colour of its flower.

Write the genotypes of man with blood group A.

What is Mendel’s monohybrid phenotypic ratio ?

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

What are the real determinants of what an organism will become ?

What is the unique feature of F1 generation ?

What will be the genetic make up of an organism which suffers from sickle cell anaemia ?

What do the symbols square and circle in a pedigree chart indicate ?

Define heterogamy. Give an example.

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