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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

No chance

B

0.5

C

0.25

D

1

Text Solution

Verified by Experts

The correct Answer is:
C
0.25
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On a long horizontally moving belt (From figure) a child runs to and fro with a speed 9 kmh^(-1) (with respect to the belt) between his father and mother located 50 m apart on the moving belt. The belt moves with a speed of 4 kmh-l. For an observer on a stationary platform outside, what is the (a) Speed of the child running in the direction of motion of the belt ? (b) Speed of the child running opposite to the direction of motion of the belt ? (c) Time taken by the child in (a) and (b) ? Which of the answers alter if motion is viewed by one of the parents ?

On a long horizontally moving belt, a child runs to an fro with a speed 9 kmh^(-1) ( with respect to the belt) between his father and mother located 50m a part on the moving belt. The belt moves with a speed of 4 kmh^(-1) . For an observer on a stationery platform outside, what is the (i) speed of the child running in the direction of motion of the belt, (ii) speed of the child running opposited to the direction of motion of the belt , and (iii) time taken by child in (i) and (ii) ? which of the answers alter if motion is viewed by one of the parents?

KUMAR PRAKASHAN-PRINCIPLES OF INHERITANCE AND VARIATION -SECTION -F (MULTIPLE CHOICE QUESTIONS (MCQS)) (MCQs ASKED IN COMPETITIVE EXAM)
  1. The incorrect statement with regard to haemophilia is

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  2. Which Mendelian idea is depicted by a cross in which the F1-generation...

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

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  4. If two persons with .AB. blood group marry and have sufficiently large...

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

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  6. Fruit colour in squash is an example of

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  7. A human female with Tunner,s syndrome :-

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  8. A man whose father was colour blind marries a woman, who had a colour ...

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  9. what is pleiotropic gene ?

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  10. In his classic experiments on pea plants, Mendel did not use

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  11. A colourblind man marries a woman with normal sight who has no history...

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  12. In the following human pedigree, the filled symbols represent the affe...

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  13. The term "linkage" was coined by

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  14. A gene showing codominance has

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  15. The mechanism that causes a gene to move from one linkage group to ano...

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  16. what is true breeding line?

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  17. If a colourblind man marries a woman who is homozygous for normal colo...

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  18. A tall true breeding garden pea plant is crossed with a dwarf true bre...

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  19. Pick out the correct statements. I. Haemophilia is a sex-linked rece...

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  20. In a test cross involving F1 dihybrid flies, more parental-type offspr...

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