science
Grade-10
Easy

Question

Physical mutagens include:

  1. UV rays.

  2. X- rays.

  3. Gamma rays.

  4. All of the above.

hintHint:

Electromagnetic radiations fall under the category of physical mutagens.

The correct answer is:

All of the above.


    • Mutation is the change in the sequence of genetic material of an individual
    • The mutation can be caused by error in cell division or due to external factors
    • The factors causing mutation are called mutagens
    • Mutagens can be classified into:
    1. Physical mutagen: Electromagnetic radiations like X rays, gamma rays, UV rays, etc
    2. Chemical mutagen: Chemical compounds like alkylating agents, heavy metals, etc
    3. Biological mutagen: Infectious organisms like viruses

    • Mutation cause change in DNA sequence
    • Not all mutations are harmful
    • Some mutations are beneficial to survive, while some mutations may not produce any effect

    Related Questions to study

    Grade-10
    science

    When a gene pair hides the effect of another gene, the phenomenon is called ____________.

    • Genes are specific DNA sequence coding for a particular trait
    • The phenotype of an individual is determined by the genotype
    • The genotype is represented by the two alleles

    When a gene pair hides the effect of another gene, the phenomenon is called ____________.

    scienceGrade-10

    • Genes are specific DNA sequence coding for a particular trait
    • The phenotype of an individual is determined by the genotype
    • The genotype is represented by the two alleles

    Grade-10
    science

    Which of the following traits were not used by Mendel?

    • Mendel used true breeding plants
    • The parent generation were homozygous with contrasting characters
    • The contrasting characters of the parents were dominant and recessive

    Which of the following traits were not used by Mendel?

    scienceGrade-10

    • Mendel used true breeding plants
    • The parent generation were homozygous with contrasting characters
    • The contrasting characters of the parents were dominant and recessive

    Grade-10
    science

    The phenotypic ratio of a dihybrid cross is?

    The F2 generation of will have :

    • 9 yellow round
    • 3 round green
    • 3 yellow wrinkled
    • 1 green wrinkled

    The phenotypic ratio of a dihybrid cross is?

    scienceGrade-10

    The F2 generation of will have :

    • 9 yellow round
    • 3 round green
    • 3 yellow wrinkled
    • 1 green wrinkled

    parallel
    Grade-10
    science

    After true-breeding, tall and dwarf plants were cross-fertilized, the F1 generation was self-fertilized. The resultant plants have genotype in the ratio

    • The F1 generation will all exhibit the dominant trait for parents having contrasting homozygous genotype
    • The F2 generation will have combination of genotype

    After true-breeding, tall and dwarf plants were cross-fertilized, the F1 generation was self-fertilized. The resultant plants have genotype in the ratio

    scienceGrade-10

    • The F1 generation will all exhibit the dominant trait for parents having contrasting homozygous genotype
    • The F2 generation will have combination of genotype

    Grade-10
    science

    How many pair of contrasting characters were studied by Mendel?

    • Mendel used true breeding plants
    • The parent generation were homozygous with contrasting characters

    How many pair of contrasting characters were studied by Mendel?

    scienceGrade-10

    • Mendel used true breeding plants
    • The parent generation were homozygous with contrasting characters

    Grade-10
    science

    In the given diagram, all the f1 progeny is yellow because:

    • F1 generation of parents with homozygous genes (one dominant and other recessive) will be all dominant
    • F2 generation will have both dominant and recessive phenotypes with different genotypes

    In the given diagram, all the f1 progeny is yellow because:

    scienceGrade-10

    • F1 generation of parents with homozygous genes (one dominant and other recessive) will be all dominant
    • F2 generation will have both dominant and recessive phenotypes with different genotypes

    parallel
    Grade-10
    science

    According to Mendel, what was responsible for the inheritance of specific traits?

    • Inheritance is the transmission of genes down to future generations
    • Laws of inheritance were proposed by Mendel
    • Laws of inheritance include: Law of dominance, Law of segregation and Law of independent assortment
    • The gene is the hereditary unit 
    • The physical traits are due to the expression of genes

    According to Mendel, what was responsible for the inheritance of specific traits?

    scienceGrade-10

    • Inheritance is the transmission of genes down to future generations
    • Laws of inheritance were proposed by Mendel
    • Laws of inheritance include: Law of dominance, Law of segregation and Law of independent assortment
    • The gene is the hereditary unit 
    • The physical traits are due to the expression of genes

    Grade-10
    science

    An organism with two identical alleles is

    • Alleles determine the phenotype of an organism
    • Alleles can be homozygous or heterozygous
    • Recessive trait will be masked in heterozygous alleles

    An organism with two identical alleles is

    scienceGrade-10

    • Alleles determine the phenotype of an organism
    • Alleles can be homozygous or heterozygous
    • Recessive trait will be masked in heterozygous alleles

    Grade-10
    science

    In the given diagram, which of the following accounts for the green pea seed in the f2 generation?

    • F1 generation of parents with homozygous genes (one dominant and other recessive) will be all dominant
    • F2 generation will have both dominant and recessive phenotypes with different genotypes

    In the given diagram, which of the following accounts for the green pea seed in the f2 generation?

    scienceGrade-10

    • F1 generation of parents with homozygous genes (one dominant and other recessive) will be all dominant
    • F2 generation will have both dominant and recessive phenotypes with different genotypes

    parallel
    Grade-10
    science

    If the genotype has one dominant and one recessive allele, then the phenotype will be :

    • An allele refers to DNA sequences present in a particular locus
    • The allele is the different versions or variants that are possible for a specific gene
    • For a particular gene two alleles are present
    • The allele is expressed as the phenotype
    • Usually the dominant allele will be expressed

    If the genotype has one dominant and one recessive allele, then the phenotype will be :

    scienceGrade-10

    • An allele refers to DNA sequences present in a particular locus
    • The allele is the different versions or variants that are possible for a specific gene
    • For a particular gene two alleles are present
    • The allele is expressed as the phenotype
    • Usually the dominant allele will be expressed

    Grade-10
    science

    An allele is considered as:

    • Alleles are sequence of nucleic acid that determine the phenotype of an organism

    An allele is considered as:

    scienceGrade-10

    • Alleles are sequence of nucleic acid that determine the phenotype of an organism

    Grade-10
    science

    In sexual reproduction ______ gametes fuse to form _________ zygote.

    • Living organisms contain two types of cells: somatic cells and sex cells
    • The somatic or body cells contain two sets of chromosomes and are called diploid
    • The gametes contain single set of chromosomes and are called haploid

    In sexual reproduction ______ gametes fuse to form _________ zygote.

    scienceGrade-10

    • Living organisms contain two types of cells: somatic cells and sex cells
    • The somatic or body cells contain two sets of chromosomes and are called diploid
    • The gametes contain single set of chromosomes and are called haploid

    parallel
    Grade-10
    science

    Genotype is referred to as the_________________

    • Genotype of an individual is a combination of genes received from both parents
    • The offspring will exert the characteristics of the dominant alone, though the genotype contains both dominant and recessive alleles

    Genotype is referred to as the_________________

    scienceGrade-10

    • Genotype of an individual is a combination of genes received from both parents
    • The offspring will exert the characteristics of the dominant alone, though the genotype contains both dominant and recessive alleles

    Grade-10
    science

    If a cross between homozygous tall (TT) and homozygous dwarf pea plant (tt) is carried out then, the offspring of the F1 generation will be:   

    • Monohybrid cross between TT vs tt is as follows:
    GametesTT
    tTtTt
    tTtTt
    • Tt is heterozygous and represents tall offspring

    If a cross between homozygous tall (TT) and homozygous dwarf pea plant (tt) is carried out then, the offspring of the F1 generation will be:   

    scienceGrade-10

    • Monohybrid cross between TT vs tt is as follows:
    GametesTT
    tTtTt
    tTtTt
    • Tt is heterozygous and represents tall offspring

    Grade-10
    science

    Which branch of biology focuses on the study of inheritance?

    • Inheritance is the transmission of genes down to future generations
    • Laws of inheritance were proposed by Mendel
    • Laws of inheritance include: Law of dominance, Law of segregation and Law of independent assortment
    • The gene is the hereditary unit 
    • The physical traits are due to the expression of genes

    Which branch of biology focuses on the study of inheritance?

    scienceGrade-10

    • Inheritance is the transmission of genes down to future generations
    • Laws of inheritance were proposed by Mendel
    • Laws of inheritance include: Law of dominance, Law of segregation and Law of independent assortment
    • The gene is the hereditary unit 
    • The physical traits are due to the expression of genes

    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.