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13. Two varieties of maize averaging 48 and 72 inches in height, respectively, are crossed, The F1 progeny is quite uniform averaging 60 inches in height. Of the 500 F2 […]

Wheat plants can have kernels of white colour or in shades of red i.e. light red, red, dark red and very dark red (purple). A researcher made the following cross: […]

11. The total variance in a phenotypic character can be split into two components – genetic (VG) and environmental (VE). The heritability of a phenotypic trait can be expressed quantitatively […]

10. Which one of the following statements is true regarding heritability of a quantitative character? (1) The estimate obtained from a given population and in one set of environment can […]

9. Interacting genes which are involved in producing continuous variation in phenotypes in a population are known as/constitute (1) codominant genes   (2) pseudogenes (3) alleles                    (4) QTLs The correct answer […]

8. In an experiment, clones of a plant is grown in a field. The plants were observed to be of different heights. When a graph was plotted for frequency of […]

7. A new trait was found to be highly variable in a population, It showed a bell-shaped distribution and is shown to be influenced by environmental factors. The trait can […]

6. Which one of the following statements is INCORRECT? (1) Quantitative inheritance results in a range of measurable phenotypes for a polygenic trait. (2) Polygenic traits often demonstrate continuous variation. […]

5. Quantitative inheritance are due to (1) Variation in phenotype (2) Variation in genotype (3) Variation in environment (4) Variation in both genotype and environment Quantitative inheritance is due to […]

4.Polygenic traits in crops can be identified by (1) QTL mapping (2) Cluster analysis (3) Tandem array analysis (4) Gene mapping Polygenic traits in crops are best identified by QTL […]