.Mutations that cause the death of the individuals are called
1. Spontaneous
2. Biochemical
3.Lethal
4.Induced
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22.In Antirrhinum production of half purple and half lavender coloured flowers after mutation is due to the
1. Phenotypic effects
2. Genotypic effects
3. Linkage
4. Crossing over
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23.White eyed mutant Drosophila was reported by
1.Bateson
2. Hugo de Vries
3. Darwin
4. Morgan
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A dwarf variety of sweet pea is called
1.Sport
2.Mutant
3.Cupid
4.Tiller
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An example of a biochemical mutant of the fungus is Antirrhinum
1. Cicer gigas
2. Antirrhinum
3.Sorghum
4.Neurospora
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Cupid of sweet pea arose by 8.
1. Gene mutation
2. Chromosomal mutation
3. Biochemical mutation
4. Spontaneous mutation
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Deletion mutations are reported in some
1.Fungi
2.Yeasts
3.Chlamydomonas
4.All the above
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Each gene occupies in a chromosome at a particular
1. Locus
2.Allele
3.Sport
4.Cupid
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Examples of beneficial mutant
1. Cultivated crops
2. Drosophila mutants
3. Biochemical mutations
4. Neurospora
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Formaldehyde nitrous acid mustard gas X-rays and UV rays are called
1.Mutant
2.Mutagens
3.Sports
4.Cupids
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Gene mutations are also known as
1. Spontaneous mutation
2. Point mutation
3. Somatic mutations
4. Duplication mutations
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Hugo de Vries observed mutations in
1. Cicer gigas
2. Cicer arietinum
3. Mirabilis jalapa
4. Oenothera lamarckiana
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If the deletion is an intermediate chromosomal segment it is
1.Intercalary
2.Terminal
3.Insertion
4. Substitution
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In which of the following types of mutation chromosome rotates by 180 ?
1.duplication
2.translocation
3.inversion
4.deletion
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Large deletions in chromosomes are usually
1. Beneficial
2. Lethal
3. Harmful
4. useful
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Loss or deletion of a single nucleotide pair causes
1.Insertion mutation
2.Addition mutation
3.Deletion mutation
4.Substitution mutation
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Many Phenotypic changes are reported in
1.Oenothera
2.Antirrhinum
3.Drosophila
4.Sorghum
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Most of the mutations are
1. Useful
2. Very useful
3.Harmful
4. Very harmful
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Mutations are artificially induced by some agents called
1. Mutants
2.Mutagens
3.Sports
4.Cupids
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Mutations arise due to 7.
1. abrupt changes in genes
2. infection by micro organisms
3. nutritional factors
4. acquired character
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Mutations occurring in reproductive cells are called
1. Spontaneous mutation
2. Germinal mutations
3. Somatic mutations
4. Lethal mutations
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Mutations that affect biochemical reactions are termed
1. Lethal mutations
2. Biochemical mutations
3. Phenotypic mutations
4. Spontaneous mutations
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Mutations which occur in nature are called
1. Lethal
2.Chromosomal
3.Spontaneous
4.Biochemical
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New breeds of domesticated animals have arisen by some
1.Chromosomal mutations
2.Gene mutations
3.Biochemical mutations
4.Spontaneous mutations
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Recessive mutant fail to produce chlorophyll in
1. Antirrhinum
2. Oenothera
3. Cicer
4.Sorghum
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Replacement of a Purine base by another Purine base is called
1. Somatic mutation
2. Addition mutation
3. Deletion mutation
4. Substitution mutation
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Scientific studies on mutation began in the year
1.1906
2.1909
3.1910
4.1900
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Some mutations are
1. Harmful
2. Beneficial
3. Very harmful
4. Very useful
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Sudden change in a gene producing a change great or small in the organism is called
1. Mutation
2.Variation
3.Evolution
4. Linkage
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The botanical name of small seeded Bengal gram is
1.Lathyrus odoratus
2.Mirabilis jalapa
3.Cicer gigas
4.Cicer arietinum
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The chromosomal aberrations that causes lethal effect is
1.Duplication
2.Translocation
3.Inversion
4.Deletion
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The effect of undetectable mutations have
1. little
2.high
3. very little
4. very high
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The fungus which cannot synthesize aminoacids due to mutation is
1.Neurospora
2.Amtirrhinum
3.Sorghum
4. Cicer gigas
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The genetically significant mutations are
1.Somatic mutation
2. Addition mutation
3. Substitution mutation
4. Deletion mutation
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The heritable phenotypic changes in Oenothera lamarckiana (evening primrose) was described by
1. Hugo de Vries
2. Seth Wright
3. Mendel
4. Lamarck
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The large seeded Bengal gram arose as a mutant of the small seeded
1.Antirrhinum
2.Sorghum
3. Cicer arietinum
4. Neurospora
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The organism which underwent mutation is called
1.Sport
2.Factor
3.Mutant
4. Allele
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The point mutations which bring about phenotypic changes in organism are
1. Substitution mutation
2. Deletion mutation
3. Addition mutation
4. Insertion mutation
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The scientist who stated that mutation is a discontinuous change
1.Bateson
2. Hugo de Vries
3. Darwin
4.Morgan
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The term �Sports� to sudden changes was used by 13.
1. Hutchinson
2. Hugo de Vries
3. Darwin
4. Morgan
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The term mutation was first used by
1. Hutchinson
2. Hugo de Vries
3.Morgan
4.Bateson
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The type of chromosomal aberration which does not change the number of genes is
1.Deletion
2.Duplication
3. Inversion
4.Translocation
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