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Due to the nondisjunctiuon of chromosome...

Due to the nondisjunctiuon of chromosomes during spermatogenesis, sperms carry both sex chromosomes (22A + XY) and some sperms do not carry any sex chromosome (22A + O). If these sperms fertilise normal eggs (22A + X), what types of genetic disorders appear among the offsprings ?

A

Tuner's syndrome and klinefelter,s syndrome

B

Down's syndrome and Klinefelter's syndrome

C

Down's syndrome and Tuner's syndrome

D

Down's syndrome and cri-du-chat syndrome

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The correct Answer is:
a
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Due to nondisjunction of chromosomes during spermatogensis, some sperms carry both sex chromosomes (22A + XY) and some sperms do not carry any sex chromosome (22A + O). If these sperms fertilise normal eggs (22A + X), what types of genetic disorders respecitively appear among the offspring ?

Due to nondisjuction of chromosomes during spermatogenesis some sperms cary both sex chromosomes (22A+XY) while others do not carry anysex chromosome (22A+O).If these sperms feticlize normal eggs (22A+X), What type of genetic disorders appear among the offspering

Due to nondisjunction of chromosomes during spermatogenesis , sperms carry both sex chromosomes ( 22A +XY ) and some sperms do not carry any sex chromosomes ( 22A+ X ) , what types of genetic disorder appear among the offsprings ?

Assertion: The presence of X or Y chromosome in the sperm determine the sex of the embryo Reason: All the eggs have one X chromosome.

Assertion :-In o graasshopper, some of the sperms bear X-chromosome whereas some do not. Reason :- Grasshopper is an example of XX-XY type of sex determination.

MODERN PUBLICATION-PRINCIPLES OF INHERITANCE AND VARIATION-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS (A. MULTIPLE CHOICE QUESTIONS (MCQs):)
  1. Mendel's principle of segregation means that the germ cells always rec...

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  2. Mendel found that reciprocal crosses yielded indentical results. From ...

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  3. Due to the nondisjunctiuon of chromosomes during spermatogenesis, sper...

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  4. Which one of the following conditions of the zygotic cell would lead t...

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  5. Test cross in plants or in Drosophila involves crossing:

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  6. Which one of the following conditions correctly describes the manner o...

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  7. Mutations can be induced with

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  8. A person with unknown blood group under ABO system, has suffered much ...

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  9. Experimental verification of chromosomal theroy of inheritance was gti...

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  10. The chromosome condition in Turner syndrome is :

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  11. In Mendelian dihybrid cross when heterozygous Round Yellow are self cr...

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  12. The loss of a chromosmal segment is due to :

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  13. XO type of sex determination is seen in

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  14. Allelism refers to

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  15. Mendelian principles are not applicable in case of

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  16. Genotypic and phenotypic ratio in monohybrid cross remains the same in...

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  17. Mendel was successful in discovering the principles of inheritance as

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  18. Crossing over is the exchange of genetic material between:

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  19. A hereditary disease which is never passed on from father to son is

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  20. If a colour blind man marries a girl who is normal (homozygous) for th...

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