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Mental retardation in man, associated wi...

Mental retardation in man, associated with sex chromosomal abnormality is usually due to

A

Moderate increasesin Y complement

B

Large increase in Y complement

C

Reduction in X complement

D

increase in X complement

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The correct Answer is:
D
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AAKASH INSTITUTE-PRINCIPLES OF INHERITANCE AND VARIATION-Assignment (SECTION-C) Previous Years Questions
  1. How many types of genetically different gametes will be produced by a ...

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  2. When a single gene influences more then one trait it is called

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  3. Mental retardation in man, associated with sex chromosomal abnormality...

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  4. Loss of an X-chromosome in a particular cell, during its development, ...

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  5. If Mandel had studied 7 traits using a plant with 12 chromosomes inste...

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  6. A woman with two genes one for haemophilia and one for colour blindnes...

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  7. In human beings, multiple genes are involved in the inheritance of:

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  8. Haemophilic man marries a normal woman. Their offspring will be

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  9. A marriage between normal visioned man and colour blind woman will pr...

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  10. In hybridization "Tt" xx "tt" gives rise to the progeny in the ratio ?

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  11. According to mendeslim which character is showing dominance:

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  12. Due to the cross between "TTRr" xx "ttrr" the resultant progenies show...

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  13. In Drosphila he XXY condition leads to femaleeness whereas in human be...

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  14. Independent assortment of genes does not take place when:

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  15. Mendel obtained wrinkled seeds in pea due to deposition of sugars inst...

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  16. Ratio of complementary genes is

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  17. When both alleles express their effect on being present together, the ...

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  18. A and B genes are linked .what shall be genotype of progeny in a cross...

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  19. Probability of four sons to a couple is :

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  20. If recombination frequency between AB genes a 20% and BC gene is 40% a...

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