10.Chromosomal aberration which involves two chromosomes is called
1.Duplication
2.Deletion
3.Translocation
4.Inversion
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A mutation which brings about structural changes in a DNA molecule is known as
1.Somatic mutation
2.Spontaneous mutation
3.Point mutation
4.Duplication mutation
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A number of duplication are reported in
1.Chlamydomonas
2.Fungi
3.Yeasts
4.Corn
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Addition of one or more extra nucleotides into a gene results in
1.Insertion mutation
2.Deletion mutation
3.Substitution mutation
4.Chromosomal mutation
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All the 4 chromosomes have interchanged segments in
1.Substitution
2.Reciprocal translocation
3.Heterozygous translocation
4.Insertion
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Carcinogenesis and mutagenesis are caused due to
1.Changes in genes
2.Changes in Chromosomes
3.Damage to DNA
4.Damage to Chromosomes
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Changed position of the genes in a chromosome is called
1.Sport
2.Allele
3.Cupid
4.Position effect
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Changed position of the genes result in
1.Inversion
2.Translocation
3.Duplication
4.Deletion
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Changes resulting in abnormal structure of one or more chromosomes are known as
1.Point mutation
2.gene mutation
3.Chromosomal aberrations
4.Substitution mutations
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Cistron and recon are the small units of
1.Chromosome
2.Chlorophyll
3.Gene
4.Somatic cell
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Deletion mutation causes lethal effect inYeast
1.Yeast
2.Antirrhinum
3.Mirabilis
4.Cicer
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Early maturing disease resistant and richly proteinaceous dwarf variety of wheat is the product of
1.Heredity
2.Mutation
3.Evolution
4.Variation
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emi-sterility in pollen and ovule is caused by
1.Duplication
2.Deletion
3.Translocation
4.Insertion
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Illegitimate crossing over is
1.Deletion
2.Addition
3.Substitution
4.Translocation
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In chromosome rearrangement of genes occur in
1.Deletion
2.Chromosomal mutation
3.Inversion
4.Translocation
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In Inversion Mutation the broken segment of the chromosome joins after rotation of
1.60 degrees
2.120 degrees
3.240 degrees
4.180 degrees
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In peas the type of chromosomal aberration reported is
1.Deletion
2.Substitution
3.Duplication
4.Translocation
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Insertion is classified under
1.Gene mutation
2.Chromosomal mutation
3.Genomic mutation
4.Somatic mutation
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Insertion mutation is also known as
1.Somatic mutation
2.Chromosomal mutation
3.Addition mutation
4.Substitution mutation
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Interchange of segments between non-homologous chromosomes is called
1.Deletion
2.Duplication
3.Substitution
4.None of them
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Local phenotypic changes in the organs are produced by
1.Somatic mutation
2.Gene mutation
3.Point mutation
4.Lethal mutation
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Loss of a segment of a chromosome is called
1.Deletion
2.Addition
3.Insertion
4.Substitution
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Many improved cultivated varieties of plants are the products of
1.Heredity
2.Variation
3.Mutation
4.Crossing over
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Mutations play an important role in
1.Evolution
2.Ecology
3.Physiology
4.Embryology
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Mutations which occur in somatic or body cells are
1.Point mutation
2.Gene mutation
3.Lethal mutation
4.Somatic mutation
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Non-heritable mutations are
1.Point mutation
2.Gene mutation
3.Lethal mutation
4.Somatic mutation
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One member of each chromosomal pair is normal and the other member is with interchanged segments in
1.Heterozygous translocation
2.Homozygous translocation
3.Reciprocal translocation
4.Insertion
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Origin of new species (or genes) is the result of
1.Heredity
2.Variation
3.Linkage
4.Mutation
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Position effect is also associated with
1.Deficiency
2.Duplication
3.Translocation
4.Substitution
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Position effects are observed in
1.Maize
2.Neurospora
3.Fungi
4.Yeast
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Repetition of certain genes results in28.
1.Deletion
2.Duplication
3.Translocation
4.Substitution
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Some heritable diseases and many instances of cancer in human beings are the results
1.Heredity
2.Variation
3.Mutation
4.Epistasis
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Sometimes the survival of the organism is affected by
1.Small duplication
2.Large duplication
3.Small addition
4.Large addition
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The biosynthetic pathways of amino acids through enzymes are under the
1.Hereditory control
2.Genetic control
3.Protein control
4.Vitamin control
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The carriers of genes are
1.Mitochondria
2.Golgi bodies
3.Chromosomes
4.Lysosomes
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The dwarf variety of paddy with many tillers and long grains are the products of
1.Natural breeding
2.Artificial breeding
3.Mutation breeding
4.Cross breeding
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The fine structure of the genes is known by the study of mutant strains of Viruses
1.Bacteria
2.Fungi
3.Yeast
4.Viruses
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The genes are arranged in linear order in
1.Chlorophyll
2.Mitochondria
3.Golgi bodies
4.Chromosomes
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The heritable mutations occurring in gametes are
1.Point mutation
2.Somatic mutations
3.Chromosomal aberrations
4.Lethal mutations
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The mutant funguns which produces more antibiotic
1.Neurospora
2.Penicillium
3.Yeast
4.Oat
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The mutant strains of this fungus lose the ability to synthesize certain amino acids
1.Neurospora
2.Penicillium
3.Yeast
4.Chlamydomonas
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The mutation that results in the change of gene order from a b c d e f g h to a b f e d c g h is called
1.Deficiency
2.Translocation
3.Duplication
4.Inversion
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The order of genes is reserved in a segment of a chromosome in
1.Inversion
2.Translocation
3.Duplication
4.Deletion
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The production of different varieties in many plants is achieved by
1.Deletion
2.Translocation
3.Substitution
4.Duplication
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The small unit of gene isMuton
1.Muton
2.Mutant
3.Mutagen
4.Sport
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The structure of the genes remain unaltered in
1.Point mutation
2.Gene mutation
3.Chromosomal aberration
4.Substitution
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The type of chromosomal aberration which changes the phenotype of an organism is
1.Deficiency
2.Duplication
3.Inversion
4.Translocation
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The type of mutation which plays an important role in species differentiation is
1.Deletion
2.Addition
3.Duplication
4.Translocation
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The varieties observed by Hugo de Vries in Oenothera lamrckiana were causes by
1.Deletion
2.Translocation
3.Substitution
4.Duplication
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When a segment of a chromosomes gets attached to a non-homologous chromosome in a new position it is called
1.translocation
2.deletion
3.inversion
4.duplication
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