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If a mother and father both have one mut...

If a mother and father both have one mutant gene for a disease with an autosomal dominant inheritance, what is their risk of having an affected child?

A

0

B

0.25

C

0.5

D

0.75

Text Solution

Verified by Experts

The correct Answer is:
D
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TRUEMAN BIOLOGY-PRINCIPLES OF INHERITANCE AND VARIATIONS -MCQs
  1. What is true for thalassaemia?

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  2. In X-linked recessive inheritance, why does the disease gene often app...

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  3. If a mother and father both have one mutant gene for a disease with an...

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  4. Which one the four couples claiming the baby with O+ blood type are th...

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  5. The weight of fruit in a plant is determined by the number of dominant...

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  6. On selfing a plant of F(1)-generation with genotype "AABbCC", the phen...

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  7. In a population of 2000 individuals, 900 individuals are suffering fro...

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  8. In an organism, 4n=100. the haploid and monoploid number of chromosome...

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  9. In man, nucleolar organisers are not located in which of the following...

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  10. A dihybrid test cross ratio for two linked genes in a hybrid is

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  11. Colour blindness is characterized by

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  12. In human beings, sex determination has recently been studied in great ...

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  13. Nucleosomes give beaded appearance to chromosomes. They help in packin...

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  14. The two nucleosomes are joined by linker DNA to which is attached

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  15. Which among the following histone proteins is least conserved in cours...

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  16. In the region of Balbiani rings (puffs), DNA strand is uncoiled. It he...

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  17. Salivary glands chromosome were discovered by Balbiani (1881) from the...

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  18. In which stage, you will find lampbrush chromosomes in oocyte of frog?

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  19. Polytene chromosome becomes giant due to

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  20. The major amino acids in histone protein of chromosomes are 1. histid...

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