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What is polyploidy and aneuploidy?...

What is polyploidy and aneuploidy?

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### Step-by-Step Solution: 1. **Definition of Polyploidy**: - Polyploidy refers to a condition in which an organism has more than two complete sets of chromosomes. - For example, while most organisms are diploid (having two sets of chromosomes), polyploid organisms can have three (triploidy), four (tetraploidy), five (pentaploidy), or even more sets of chromosomes. 2. **Occurrence of Polyploidy**: - Polyploidy is commonly observed in certain groups of organisms, particularly in amphibians and fishes. ...
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Knowledge Check

  • polyploidy means :

    A
    occurrence of diploid set of chromosomes
    B
    occurrence of haploid set of chromosomes
    C
    occurrence of three or more sts of chromosome
    D
    all of the above

  • Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Aneuploidy which occurs due to loss of a complete homologous pair of chromosomes is :

    A
    Trisomy
    B
    Nullisomy
    C
    Tetrasomy
    D
    Euploidy

  • Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Change in sequence of nucleotide in DNA is known as ...... .

    A
    Translation
    B
    Recombination
    C
    Mutation
    D
    Transcription

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    Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Substitution of a purine with another purine is known as ...... :

    Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Which is the main category of mutation ?

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