General Science/Basic Science Genetics Linkage And Crossing Over Sample Test,Sample questions

Question:
An important criterion for evolution of organisms is




1.Mutation

2.Heredity

3.Evolution

4.Variation


Question:
Coupling and repulsion are experimented on fruit fly by





1.Bateson

2.Morgan

3.Punnet

4.Sinnot


Question:
Coupling and repulsion are two aspects of same phenomenon called







1.Linkage

2.Crossing over

3.Evolution

4.Variation


Question:
Crossing Over occurs when the homologous chromosomes contain




1.One chromatid

2.Two chromatid

3.Four chromatid

4.Eight chromatid


Question:
Crossing over plays an important role in the process of





1.Mutation

2.Heredity

3.Evolution

4.Variation


Question:
Due to linkage in maize, the number of coloured shrunken seeds produced are




1.4032

2.4035

3.149

4.152


Question:
Due to linkage in maize, the number of colourless shrunken seeds produced are





1.4032

2.4035

3.149

4.152


Question:
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


Question:
Genes located on the same Chromosome do not separate independently because of




1.Crossing over

2.Linkage

3.Mutation

4.Factors interaction


Question:
Homologous chromosomes exchange corresponding segments between non-sister chromatids during




1.Linkage

2.Crossing Over

3.Mutation

4.Epistasis


Question:
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


Question:
In maize the genotype of coloured full seeds is



1.CcSs

2.Ccss

3.Ccss

4.ccss


Question:
In maize the genotype of colourless full seeds in





1.CcSs

2.Ccss

3.ccSs

4.ccss


Question:
Linkage is clear in





1.Paddy

2.Maize

3.Snapdragon

4.Sweet pea


Question:
Linkage is maize was reported by





1.Bateson

2.Morgan

3.Hutchinson

4.Sinnot


Question:
Linkage is usually





1.Complete

2.Incomplete

3.Intermediate

4.Full


Question:
Linkage usually gets broken due to




1.Mutation

2.Cross over

3.Epistasis

4.Variation


Question:
Mutation helps for





1.evolution

2.cell division

3.fertilization

4.protein synthesis


Question:
New combination of genes are produced due to





1.Linkage

2.Epistasis

3.Crossing over

4.Duplication


Question:
Pairing of homologous chromosomes is called




1.Terminalisation

2.Linkage

3.Crossing over

4.Synapsis


Question:
Recombination of linked genes is accomplished by





1.Linkage

2.Epistasis

3.Mutation

4.Cross over


Question:
The adjacent non-sister chromatid remain in contact at certain points called




1.Locus

2.Chiasmata

3.Linkage

4.Coupling


Question:
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


Question:
The genotype of colourless shrunken seeds in maize is




1.CcSs

2.ccss

3.Ccss

4.ccSs


Question:
The mechanism that provides the basis for new varieties of plant is





1.Linkage

2.Crossing over

3.Epistasis

4.Repulsion


Question:
The number of Chromosomal pairs in Drosophila melanogaster is




1.1 pair

2.2 pair

3.3 pair

4.4 pair


Question:
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


Question:
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


Question:
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


Question:
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


Question:
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


Question:
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


Question:
The Zoological name of fruit fly is




1.Drosophila melanogaster

2.Cicer gigas

3.Cicer arietinum

4.Mirabilis jalapa


Question:
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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