Agriculture MCQs

Page No. 93

When two genes are situated very close together in a chromosome_____________________?


aThe percentage of crossing over between them is very


bHardly any cross over are detected


cNo crossing ever can ever takes place between them


dOnly double cross over can take place between them



Eugenics refers to__________________?


aScience concerned with improvement of heredity of animals


bScience concerned with improvement of heredity of human race


cExperimental alterations in the structure of the genes


dGenetics of eukaryotes



The term gene was coined by__________________?


aBatson


bJohnnson


cPunned


dDarlington


View Answer Batson

Theory of mutation was given by___________________?


aMendel


bDe Vries


cTschermak


dWatson


View Answer Watson

A normal plant suddenly started reproducing parthengentically. the number of chromosomes of the second generation compared to the parent plant will be____________________?


aDouble


bOne half


cOne fourth


dSame


View Answer Same

A cross of hybrid with one of its recessive parent is termed____________________?


aTest cross


bBack cross


cHybridization


dTrihybrid


View Answer Test cross

The physical appearance of an organism is denoted by____________________?


aPhotocopy


bPrototype


cPhenotype


dApheliotropic


View Answer Phenotype

A cross of unlike organisms is termed as____________________?


aHybrid


bHeterosis


cBackcross


dNone of the above


View Answer Hybrid

Abnormal cell with random number of chromosomes is__________________?


aAnnapolis


bHeterckaryotic


cpolyploidy


dhaploid


View Answer Annapolis

which of the following probably occur when a diploid cell undergoes normal meiotic division________________?


aAll dominant genes will segregate together into daughter cells


bAll homologous chromosome pairs will separate


cAll daughter cells will have different homologous chromosome pairs


dAll linkage group will be disrupted



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