Agriculture MCQs

Page No. 109

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


aThey showed one type of flowers


bthey belong to the family leguminous


cThe seven characters he studied were on different chromosomes


dThey have round seeds with lot of proteins



Organism arise from existing forms by genetic variations is called_________________?


aMutation


bGenetics


cHybridization


dNone of the above


View Answer Genetics

Evolution may be described as___________________?


aHistory of development of larger biological units


bContinuous genetic variation


cInheritance of acquired characters


dDiscontinuous genetic variation



Episodes may be factor in____________________?


aDominance


bCytoplasm inheritance


cIncomplete dominance


dChromosomal inheritance


View Answer Dominance

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


aCross breeding


bBack crossing


cSelf fertilization


dInbreeding


View Answer Back crossing

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


aAtavism


bAuxotroph


cAxoneme


dArmor


View Answer Armor

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


aHeterocyst


bHeteropyenosis


cHypstasis


dEpistastasis


View Answer Heterocyst

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


aSingle gene may produce multiple effects


bDominance may be incomplete


cThe environment effects the expression of genetic character


dGenetic trails are influence by many genes



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


a12


b24


c22


d23


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


bDominant lethal genes in homozygous individuals


cDominant epistasis


dNone of the above



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