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A plant with red flowers was crossed wit...

A plant with red flowers was crossed with another plant of the same species with white flowers. The offspring thus obtained were 60 plants all with only pink flowers. On selfing, these plants produced 60 plants with red flowers. Explain the genetic principle behind these results

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Apant of Antirrhinum majus with red flowers was crossed with another plant of the same species with white flowers. The plants of the F_(1) generation bore pink flowers . Explain the patttern o inheritance with the help of a cross.

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ICSE-PRINCIPLES OF INHERITANCE AND VARIATION-PRACTICE QUESTIONS ( SHORT ANSWER TYPE-II QUESTIONS)
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  2. Why do the sons of a carrier mother and a normal father suffer from ha...

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  3. A woman gave birth to four daughters in successive pregnancy. How woul...

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  4. A plant with red flowers was crossed with another plant of the same sp...

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  5. What are duplication and translocation in connection with chromosomal ...

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  6. Why do mostly men suffer from haemophilia and colour blindness? Under ...

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  7. What is aneuploidy and polyploidy? Give one example of each.

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  8. Explain the mechanism of sex determination in humans.

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  9. What is a testcross? What is its significance? Give the phenotypic rat...

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  10. Differentiate between linkage and sex-linked inheritance. Describe the...

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  11. A mother with O type of blood group has conceived. The expected blood ...

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  12. Human skin colour is believed to be controlled by at least three sepra...

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  13. Taking the example of ABO blood types of humans, explain the phenomena...

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  14. What are linked genes? Diagrammatically represent a cross between a wh...

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  15. What is codominance? How does it differ from incomplete dominance?

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  16. If a true breeding homozygous pea plant with green pod and axial flowe...

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  17. If a true breeding homozygous pea plant with green pod and axial flowe...

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  18. If a true breeding homozygous pea plant with green seed and axial flow...

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  19. A true breeding tall plant is crossed with a true breeding dwarf plant...

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  20. A true breeding tall plant is crossed with a true breeding dwarf plant...

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