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Down's syndrome is due to---...

Down's syndrome is due to---

A

Crossing over

B

Linkage

C

Sex-linked inheritance

D

Non-disjunction of Chromosmes

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USHA PUBLICATION-GENETICS-EXERCISE
  1. Segregation of alleles takes place during

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  2. Genetic complement is called

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  3. Down's syndrome is due to---

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  4. If a colour blind man marries a normal woman,their children will be --...

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  5. The best method to improve the genetic quality of mankind is ----

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  6. To a person with blood group A which one of the following group of blo...

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  7. The exchange of chromosome segments between maternal and paternal chro...

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  8. If a normal man marries a carrier woman for colour blindness, their so...

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  9. Marriage between one of the following paris may cause child death ----

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  10. Daughter receives 'X' chromosome from ----

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  11. Gene for hypertrichosis is ----

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  12. Sex - determination in Drosophila melanogaster is based on ----

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  13. Homogametic environment interaction.

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  14. Genes for sex influenced characters are present in ------

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  15. If a child has O type of blood group and the mother B type, the genoty...

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  16. Which of the following types of sex determination is found in grasshop...

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  17. What type of sex determination is seen in honey bee ?

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  18. What type of sex determination seen in human being?

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  19. Who discorved Free martin in cattle?

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  20. How many Barr bodies are present in a female with Tumers' syndrome?

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