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In pea, yellow seed colour is dominant over green colour. Heterozygous yellow seeded plant is crossed with green seeded plant. The ratio of yellow & green seeded offspring will be

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Important Questions on Heredity & Evolution

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KVPY Aptitude Test - Stream SA
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A human male produce diallelic sperms in equal proportion AB, Ab, aB and ab. The genotype of the person would be
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KVPY Aptitude Test - Stream SA
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Which one of the following cannot be explained on the basis of Mendel's Law of Dominance
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KVPY Aptitude Test - Stream SA
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F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1:2:1 It represents a case of :
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KVPY Aptitude Test - Stream SA
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A test cross is carried out to :
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KVPY Aptitude Test - Stream SA
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A diploid cell is treated with colchicine. It becomes
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KVPY Aptitude Test - Stream SA
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Lack of independent assortment between two genes A and B would be due to
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KVPY Aptitude Test - Stream SA
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R and Y genes of maize lie very close to each other. When RRYY and rryy genotype are hybridised, F2 generation will show
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KVPY Aptitude Test - Stream SA
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Study the pedigree chart given below

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What does it show: