Agriculture MCQs

Page No. 110

The organic evolution look place about__________________?


a100,000,000 years


b200,000,000 years


c300,000,000 years


dStill occurring


View Answer 200,000,000 years

Which of the following had great influence on Drawing during during formulation of his theory of natural selection_________________?


aLamark’s idea on inheritance of acquired character’s


bMathis’s essay on population


cMendes’s experiment on pea


dDe Vries theory of mutation



Hereditary variations in plants have been produced by the use of________________?


aDDT


bX - rays


cGibberrellic acid


dAuxins


View Answer Gibberrellic acid

Red (RR) is crossed with white (ww). All the (Rw) offsprings are pink this is an indication that the R gene is_________________?


aRecessive


bIncomplete dominant


cMutant


dDominant


View Answer Incomplete dominant

haploids are better for mutation studies because in them all the mutations whether recessive or dominant are expressed as_______________?


aThere are many alleles of each gene in each cell


bThere are two alleles of each gene in each cell


cThere is only one alleles of each gene present in each cell


dNone of the above



After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?


aHeterogenous


bHeterozygous


cHomogenous


dHomozygous


View Answer Heterozygous

Epitasis implies_____________________?


aOne gene pair enhances phenotype expression of another gene pair


bMany gene together control a parucular phenotype


cOne pair of gene can completely mask the expression of another gene pair


dOne gene pair independently controls a phenotype



Who gave the principle that man tends to multiply faster than food supply________________?


aMathis


bMendel


cDarwin


dHaldane


View Answer Mathis

Who arrang the following associated with genetic engineering___________________?


aWatson


bCrick


cKoruna


dMorgan


View Answer Koruna

In case of incomplete dominance in the f2 generation_______________________?


aRatio of phenotypes is 3:1


bRatio of genotypes is 3:1


cPhenotypic ratio corresponds to the genotypic ratio


dNone of the above



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