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Down.s syndrome is due to ....... of chr...

Down.s syndrome is due to ....... of chromosome 21.

A

Polyploidy

B

Deficiency of Protein

C

Malnutrition

D

Non-disjunction of Chromosome

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USHA PUBLICATION-GENETICS-EXERCISE
  1. Law of independent assortment of Mendel can be proved on the basis of ...

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  2. Which of the following genotype of man shows presence of one Barr Body...

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  3. Down.s syndrome is due to ....... of chromosome 21.

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  4. Which one is linked to hypertrichosis ?

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  5. Who worked profoundly on Drosophila genetics ?

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  6. Which genetic disease is regarded as Royel disease ?

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  7. In birds type of sex determination occurs.

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  8. Who proposed genic balance theory for determination of sex in Drosophi...

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  9. In human, the composition of female destined zygote is -----

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  10. Human thalassemia is an autosomal recessive hereditary disease caused ...

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  11. The Pedigree study of haemophilia was first made by ----- in the royal...

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  12. Turner's syndrome is represented by -----

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  13. Probability of genotype TTrr in F2 - generation of a dihybrid cross is...

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  14. 1:2:1 Phenotype and genotypeic ratio occors in case of ----

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  15. One of the genes present exclusively on the X chromosome in human is c...

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  16. Which one is a sex-linked disorder?

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  17. What was the phenotypic ratio in F2 of mendelian . monohybrid cross?

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  18. What is the ratio of F2 in a MendelianDihybrid cross?

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  19. What is Mendel's Monohybrid test cross ratio?

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  20. What is the genotypic ratio in F2 OF Mendelian monohybrid cross?

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