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