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If both parents are carriers for thalass...

If both parents are carriers for thalassaemia, which is an autosomal recessive disorder, what are the chances of pregnancy resulting in an affected child?

A

0.5

B

0.25

C

1

D

No chance

Text Solution

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The correct Answer is:
b
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MODERN PUBLICATION-PRINCIPLES OF INHERITANCE AND VARIATION-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS (A. MULTIPLE CHOICE QUESTIONS (MCQs):)
  1. If two persons with 'AB' blood group marry and have sufficiently large...

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  2. Which Mendelian idea is depicted by a cross in which the F(1)-generati...

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  3. If both parents are carriers for thalassaemia, which is an autosomal ...

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  4. Which of the following statements is not true of two genes that show 5...

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  5. To analyse the genotype of an organism,it is made to:

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  6. In Mendel's seven characters of Pea, total number of colours tested by...

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  7. Heterogemete is the where an individual produce two types of gametes. ...

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  8. Choose a false statement with reference to sickle cell anaemia:

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  9. A man whose father was colour blind marries a woman who had a colour b...

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  10. In a population of 1000 individuals 360 belong to genotype AA, 480 to ...

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  11. A human female with Turneer's syndrome

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  12. Person with blood group AB is considered as universal recipient becaus...

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  13. Fruit colour in squash is an example of

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  14. When a gene pair in an organism contains two indentical alleles,the or...

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  15. The exchange of genetic material between chromatids of paired homologo...

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  16. A pleiotropic gene:

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  17. Skin colour in humans is an example of

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  18. Howmany types of gemete will be produced by an individual having genot...

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  19. Find the odd one out, with respect to X-linkage

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  20. Epicanthal skin fold and simian crease are characteristics of:

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