Agriculture MCQs

Page No. 109

Mendel was lucky to use pea plants for genetical experiments because__________________?


aThey showed one type of flowers

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bthey belong to the family leguminous

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cThe seven characters he studied were on different chromosomes

✓


dThey have round seeds with lot of proteins

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Organism arise from existing forms by genetic variations is called_________________?


aMutation

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bGenetics

✓


cHybridization

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dNone of the above

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View Answer Genetics

Evolution may be described as___________________?


aHistory of development of larger biological units

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bContinuous genetic variation

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cInheritance of acquired characters

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dDiscontinuous genetic variation

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Episodes may be factor in____________________?


aDominance

✓


bCytoplasm inheritance

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cIncomplete dominance

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dChromosomal inheritance

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View Answer Dominance

A useful process for determining whether an individual is homozygous or heterozygous is_____________________?


aCross breeding

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bBack crossing

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cSelf fertilization

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dInbreeding

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View Answer Back crossing

Mutant allele that has little or no effect on the expression of a tart is known as_____________________?


aAtavism

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bAuxotroph

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cAxoneme

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dArmor

✓


View Answer Armor

Superiority of heterozygote in respect to one or more traits in comparison to corresponding homozygote is known as____________________?


aHeterocyst

✓


bHeteropyenosis

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cHypstasis

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dEpistastasis

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View Answer Heterocyst

Presence of slight differences in identical twins support the hypothesis that___________________?


aSingle gene may produce multiple effects

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bDominance may be incomplete

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cThe environment effects the expression of genetic character

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dGenetic trails are influence by many genes

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If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosmic is_________________?


a12

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b24

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c22

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d23

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View Answer 23

In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?


aDominant lethal genes in heterozygous individuals

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bDominant lethal genes in homozygous individuals

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cDominant epistasis

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dNone of the above

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