What is the point mutation? Give an example.

Important Questions on Principles of Inheritance and Variation

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 7

A person has to perform crosses for the purpose of studying the inheritance of a few traits/characters. What should be the criteria for selecting the organisms?

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 8

In order to obtain the F₁ generation, Mendel pollinated a pure breeding tall plant with a pure breeding dwarf plant. But to get the F₁ generation, he simply self-pollinated the tall F₁ plants. Why?

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12th Andhra Pradesh Board

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Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 9

How are alleles of a particular gene differ from each other?

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 9

Explain the significance of alleles of a particular gene.

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 10

In a mono-hybrid cross between red and white-flowered plants, a geneticist got only red-flowered plants. On self-pollinating these F1 plants, he got both red and white-flowered plants in a 3:1 ratio. Explain the basis of using RR and rr symbols to represent the genotype of plants of the parental generation.

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12th Andhra Pradesh Board

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Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 11

What is the genetic nature of the wrinkled phenotype of pea seeds?

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 1

In a Mendelian monohybrid cross, the F₂ generation shows identical genotypic and phenotypic ratios. What does it tell us about the nature of alleles involved? Justify your answer.

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12th Andhra Pradesh Board

IMPORTANT

Intermediate Second Year Botany>Chapter 9 - Principles of Inheritance and Variation>Questions>Q 2

Mention the advantages of selecting pea plant for the experiment by Mendel.