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Principles of Inheritance and Variation

One Word Answers

1. Name one trait that does not blend.

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2. Give one example of genetic trait for each of the following in humans : (i) Lethality (ii) Multiple allelism.

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3. What for symbols AA and Aa stand ?

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4. Mention the phenomenon of pleiotropy by giving an example.

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One Word Answers

5. Name the plant that shows incomplete dominance in respect of the colour of its flower.

The plany which shoes incomplete dominace in respect of the colour of its flower is -

Snapdragron ( Antirrhinum majus)

Or

Mirabilis jalapa (Four-O- Clock plant ).

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6. Write the genotypes of man with blood group A.

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7. What is Mendel’s monohybrid phenotypic ratio ?

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8. Write down Mendel’s dihybrid Phenotypic ratio

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9. Who were the rediscoverers of Mendelism ?

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10. What are the real determinants of what an organism will become ?

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