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the pedigree chart given below shows a p...

the pedigree chart given below shows a particular trait which is absent in parents but present in the next generation irrespective of sexes. Draw your conclusion on the basis of the pedigree.

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The pedigree chart shows that the trait is autosome linked and recessive in nature. But, the parents are carries (i.e., heterozyguous) hence, among the offspring only few show the trait irrespective of sex. The other offsprings are either normal or carrier.
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NCERT EXEMPLAR-PRINCIPLE OF INHERITANCE AND VARIATIONS -Principle Of Inheritance And Variations
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  8. For the experssion of traits genes provide only the potentiality and t...

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  9. A, B, D are three independently assorting genes with their recessive a...

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  10. In our society a woman is often blamed for not bearing male child. Do ...

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  11. Discuss the genetic basis of wrinkled phentype of pea seed.

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  13. How does a mutagen induce mutation? Explain with example.

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  14. In a Mendelian monohybrid cross, the F(2)-generation shows identcal ge...

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  16. What is Down's syndrome? Give its symotoms and cause. Why is it that t...

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  17. How was it concluded that genes are located on chromosomes?

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  19. What are the characteristic features of a trur-breeding line?

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