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Cri-du-chat syndrome in humans is caused...

Cri-du-chat syndrome in humans is caused by the

A

Fettilization of and XX egg by a normal Y-bearing sperm

B

Loss of half of the short arm of chromosome 5

C

Loss of half of the long arm of chromosome 5

D

Trisomy of `21^(st)` chromosome

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The correct Answer is:
B
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ALLEN-GENETICS & MOLECULAR BASIS OF INHERITANCE AND MUTATION-EXERCISE-II (PREVIOUS YEAR QUESTIONS
  1. One turn of the helix in a beta-form of DNA is approximately

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  2. Antiparallel strands of a DNA molecule means that

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  3. Cri-du-chat syndrome in humans is caused by the

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  4. The first man made cereal Triticale has been developed from a cross be...

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  5. During protein synthesis in an organism at one point the process comes...

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  6. Thymine is

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  7. In which one of the following combinations (1-4) of the number of chro...

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  8. A human male produces sperms with the genotypes AB,Ab,aB, ab pertainin...

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  9. In pea plant, yellow seeds are dominant to green. If a heterozygous ye...

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  10. Inheritance of skin colour in humans is an example of:-

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  11. Two genes R and Y are located very close on the chromosomal linkage ma...

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  12. Differentiation of organs and tissues in a develping organism is assoi...

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  13. Molecular basis of organ differentiation depends on the modulation in ...

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  14. The Okazaki fragments in DNA chain growth

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  15. The two polynucleotide chains in DNA are

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  16. In the hexaploid wheat, the haploid (n) and basic (x) number of chromo...

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  17. Which of the following nitrogen base is not found in DNA -

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  18. Polysome is formed by

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  19. Which one of the following pairs of nitrogenous bases of nucleic acids...

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  20. In the DNA molecule

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