Plant Breeding & Genetics Mcqs


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

a. DDT
b. X-rays
c. Gibberrellic acid
d. Auxins


ANSWER: See Answer
 
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MCQs:  The genetic constitution of an orgarusm is denoted by____________________?
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MCQs:  A cross of hybrid with one of its parents is termed as____________________?
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MCQs:  Reproduction from an unfertilized egg or reproduction without fertilization may be defined as___________________?
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MCQs:  In the F2 generation, genotypic and phenotypic ratios are identical in cases of___________________?
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MCQs:  As a result of linkage and crossingover _____________________?
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MCQs:  A dihybrid ratio is____________________?
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MCQs:  The chromosome number of human race is__________________?
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MCQs:  Mendel studied contrasting characters for his breeding cxperiments with peas which of the following character he did not study_______________?
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MCQs:  The new crop critical has been evolved by intervener hybridization between________________________?
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MCQs:  The crossing of a yomozygous tall plant and a homozygous dwarf plant would yield plants in the ratio of_________________?
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MCQs:  In crop improvement programmed haploids are of great importance because they__________________?
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MCQs:  Among the following the test cross is_________________?
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MCQs:  The primary advantage of sexual over asexual reproduction is______________________?
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MCQs:  Linkage of hereditary units was discounted by__________________?
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MCQs:  Gynandromorphy in Drosophila because of_________________?
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MCQs:  Absence of chlorophyll in a plant is known as__________________?
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MCQs:  The spread of genes from one breeding population to another by migration which may result in changes in gene frequency is called__________________?
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MCQs:  Occurrence of cells in diploid organisms containing multiples of the 2n genomes is known as____________________?
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MCQs:  Pedigree selection is used in____________________?
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MCQs:  An organism or cell having a chromosome number that is higher than the exact nultiple of the basic number is known as__________________?
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