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In an experiment on sweet pea (Lathyrus ...

In an experiment on sweet pea (Lathyrus odoratus), a cross was made between two plants, one having purple flowers and the other having white flowers. In `F_1`, all had purple flowers and in `F_2` , it was a modified Mendelian ratio: (a) What ratio do you expect in `F_2`? (b) What is this phenomenon termed as? (c) What are such genes known as?

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ICSE-PRINCIPLES OF INHERITANCE AND VARIATION-PRACTICE QUESTIONS ( LONG ANSWER TYPE QUESTIONS)
  1. Write short notes on: Sex-chromosome

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  2. Give the scientific name of the plant selected by Mendel for his exper...

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  3. In an experiment on sweet pea (Lathyrus odoratus), a cross was made be...

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  4. Differentiate between Testcross and Reciprocal cross

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  5. Differentiate between genotype and phenotype.

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  6. Differentiate between Epistasis and Dominance

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  7. Differentiate between Codominance and Incomplete dominance

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  8. Explain in detail the meaning of the phenotypic ratio 9 : 3:3 : 1 in t...

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  9. Define epistasis and give one example of this phenomenon. How is the p...

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  10. In Mendel's breeding experiment on garden pea, the F2 generation yiel...

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  11. Explain the law of independent assortment. Give example to show how th...

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  12. Write short notes on: Pleiotropy

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  13. Write short notes on: Allele

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  14. List the different ways by which mutations alter the structure of the ...

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  15. Show by a series of diagrammatic sketches how at the end of meiosis II...

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  16. Why are genetic variability essential for a species to survive? Name t...

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  17. Write an essay on chromosomal aberrations, giving their cytological an...

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  18. Describe the phenomenon of epistasis as found in the flower colour of ...

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  19. How do variations arise in sexually reproducing organisims? Explain br...

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  20. Mendel crossed true-breeding tall pea plants having purple flowers wit...

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