Mendel observed that all the ${\mathrm{F}}_1$ progeny plants.

Important Questions on Principles of Inheritance and Variation

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 77

According to Mendel, "factors" or "genes"

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 78

The phenotype of any character will not be affected if the modified allele produces-

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 79

The recessive characters are -

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 80

In Mirabilis & Antirrhinum plant the appearance of the pink hybrid (Rr) between the cross of a red (RR) and white (rr) flower parent indicates:-

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 81

RR (red) is crossed with rr (white). All Rr offsprings are pink. This indicates that the R-gene is

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 82

In case of incomplete dominance the monohybrid ratio of phenotypes in ${\mathrm{F}}_2$ generation is :-

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 83

When the phenotypic and genotypic ratios resemble in the F₂ generation it is an example of :-

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- I (Conceptual Questions)>Q 84

In Mirabilis jalapa when homozygous red flowered and white flowered plants are crossed, all ${\mathrm{F}}_1$ plants have pink coloured flowers. In ${\mathrm{F}}_2$ produced by selfing of ${\mathrm{F}}_1$ plants, red, pink and white flowered plants would appear respectively in the ratio of :-