An important criterion for evolution of organisms is
1.Mutation
2.Heredity
3.Evolution
4.Variation
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Coupling and repulsion are experimented on fruit fly by
1.Bateson
2.Morgan
3.Punnet
4.Sinnot
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Coupling and repulsion are two aspects of same phenomenon called
1.Linkage
2.Crossing over
3.Evolution
4.Variation
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Crossing Over occurs when the homologous chromosomes contain
1.One chromatid
2.Two chromatid
3.Four chromatid
4.Eight chromatid
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Crossing over plays an important role in the process of
1.Mutation
2.Heredity
3.Evolution
4.Variation
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Due to linkage in maize, the number of coloured shrunken seeds produced are
1.4032
2.4035
3.149
4.152
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Due to linkage in maize, the number of colourless shrunken seeds produced are
1.4032
2.4035
3.149
4.152
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During crossing over, exchange of chromosomal or genetic material takes place between
1.two chromatids
2.two chromosomes
3.two non-sister chromatids of each tetrad
4.two sister chromatids of each homologue
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Genes located on the same Chromosome do not separate independently because of
1.Crossing over
2.Linkage
3.Mutation
4.Factors interaction
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Homologous chromosomes exchange corresponding segments between non-sister chromatids during
1.Linkage
2.Crossing Over
3.Mutation
4.Epistasis
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In maize parental and recombinations are produced in the ratio of
1.50:50:00
2.9:07
3.96.4:3.6
4.1:7:7:1
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In maize the genotype of coloured full seeds is
1.CcSs
2.Ccss
3.Ccss
4.ccss
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In maize the genotype of colourless full seeds in
1.CcSs
2.Ccss
3.ccSs
4.ccss
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Linkage is clear in
1.Paddy
2.Maize
3.Snapdragon
4.Sweet pea
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Linkage is maize was reported by
1.Bateson
2.Morgan
3.Hutchinson
4.Sinnot
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Linkage is usually
1.Complete
2.Incomplete
3.Intermediate
4.Full
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Linkage usually gets broken due to
1.Mutation
2.Cross over
3.Epistasis
4.Variation
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Mutation helps for
1.evolution
2.cell division
3.fertilization
4.protein synthesis
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New combination of genes are produced due to
1.Linkage
2.Epistasis
3.Crossing over
4.Duplication
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Pairing of homologous chromosomes is called
1.Terminalisation
2.Linkage
3.Crossing over
4.Synapsis
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Recombination of linked genes is accomplished by
1.Linkage
2.Epistasis
3.Mutation
4.Cross over
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The adjacent non-sister chromatid remain in contact at certain points called
1.Locus
2.Chiasmata
3.Linkage
4.Coupling
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The genes located on the same Chromosome that are inherited together are known as
1.Complementary genes
2.Supplementary genes
3.Mutant genes
4.Linked genes
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The genotype of colourless shrunken seeds in maize is
1.CcSs
2.ccss
3.Ccss
4.ccSs
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The mechanism that provides the basis for new varieties of plant is
1.Linkage
2.Crossing over
3.Epistasis
4.Repulsion
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The number of Chromosomal pairs in Drosophila melanogaster is
1.1 pair
2.2 pair
3.3 pair
4.4 pair
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The ratio observed by Bateson and Punnet when they test crossed in sweet pea between BbLl and bbll was
1.9:3:3:1
2.9:07
3.7:1:1:7
4.12:03:01
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The ratio obtained by Bateson and Punnet when they test crossed second time between blue long and red round in sweet pea
1.7:1:1:7
2.1:1:1:1
3.1:7:7:1
4.9:3:3:1
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The scientist who considered that the genes carried on the same chromosome remain linked as a group and are transmitted together through the gametes to the offspring
1.Hutchinson
2.Bateson
3.Morgan
4.Correns
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The scientist who discovered that coupling and repulsion are two aspects of a single phenomenon called linkage is
1.Bateson
2.Mendel
3.Morgan
4.Punnet
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The scientists who proved that Mendel's law of independent assortment is not universal
1.Morgan and Mendel
2.Chiasmata
3.Bateson and Punnet
4.Sinnot and Punnet
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The tendency of two different genes to remain apart if they come from two different parents is
1.Coupling
2.Repulsion
3.Linkage
4.Crossing over
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The Zoological name of fruit fly is
1.Drosophila melanogaster
2.Cicer gigas
3.Cicer arietinum
4.Mirabilis jalapa
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When two different genes come from the same parent they tend to remain together is called
1.Coupling
2.Repulsion
3.Linkage
4.Crossing over
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