Mutation

IMPORTANT

Mutation: Overview

This Topic covers sub-topics such as Mutation, Transition, Missense Mutation, Euploidy, Spontaneous Mutation, Nonsense Mutation, Silent Mutation, Induced Mutation, Transversion, Variations in Chromosome Number and, Mutation on the Basis of Occurrence

Important Questions on Mutation

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biology>Principles of Inheritance and Variation>Mutation> Q 1

The primary source of allelic variation is

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biology>Principles of Inheritance and Variation>Mutation> Q 2

What are types of induced mutations?

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biology>Principles of Inheritance and Variation>Mutation> Q 3

What is transition and transversion?

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biology>Principles of Inheritance and Variation>Mutation> Q 4

What causes an induced mutation?

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biology>Principles of Inheritance and Variation>Mutation> Q 5

What are types of induced mutations?

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biology>Principles of Inheritance and Variation>Mutation> Q 6

Mutation was first observed in:

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biology>Principles of Inheritance and Variation>Mutation> Q 7

Read the following statement and identity the correct ones.

(i) Hinny and mare are hybrids produced by mating two different species.

(ii) In a population, new alleles arise due to mutations.

(iii) All the genes and their alleles found in an interbreeding population are called gene pool.

(iv) Drosophila pseudoobscura and Drosophila persimilis are examples of allopatric species. 

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biology>Principles of Inheritance and Variation>Mutation> Q 8

Read the following statements (A-D) and state true (T) and false (F):

A. Deletions and insertions of base pairs of DNA cause frame shift mutations.

B. An example of point mutation is sickle cell anaemia.

C. Mendelian disorders are mainly determined by alteration or mutation in the single gene.

D. Haemophilia, colour blindness and cystic fibrosis are sex-linked recessive disorders.

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biology>Principles of Inheritance and Variation>Mutation> Q 9

Read the following statements:

A. The phenomenon which results in alteration of DNA sequence and consequently results in changes in genotype and the phenotype of an organism.

B. In addition to recombination, it is another phenomenon that leads to variation in DNA.

The phenomenon explained above is

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biology>Principles of Inheritance and Variation>Mutation> Q 10

Which of the following types of mutation have been categorised based on their effect on translation?

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biology>Principles of Inheritance and Variation>Mutation> Q 11

Which of the following mutations occur due to molecular change?

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biology>Principles of Inheritance and Variation>Mutation> Q 12

Which one of the following is a wrong statement regarding mutations ?

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biology>Principles of Inheritance and Variation>Mutation> Q 13

The idea of mutations was brought forth by which scientist and he worked on which plant?

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biology>Principles of Inheritance and Variation>Mutation> Q 14

Mutations are caused due to

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biology>Principles of Inheritance and Variation>Mutation> Q 15

The most mutable virus is

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biology>Principles of Inheritance and Variation>Mutation> Q 16

The conversion of mutant type into wild type is called:

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biology>Principles of Inheritance and Variation>Mutation> Q 17

Haploids are more suitable for mutation studies than the diploids. This is because :-

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biology>Principles of Inheritance and Variation>Mutation> Q 18

The point mutation A to G, C to T, C to G, T to A in DNA are:

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biology>Principles of Inheritance and Variation>Mutation> Q 19

The point mutation A to G, C to T, C to G, T to A in DNA are :-

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biology>Principles of Inheritance and Variation>Mutation> Q 20

The ultimate source of variation is :