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A pea plant which is homozygous for Green pods which are inflated [GG1I] is crossed with a homozygous plant for yellow pods which are constricted [ggii]. Answer the following questions: (i) Give the phenotype and genotype of the F, generation. Which type of pollination has occurred to produce F1 generation? (ii) Write the phenotypic ratio of the F2 generation. (iii) Write the possible combinations of the gametes that can be obtained if two F1 hybrid plants are crossed. (iv) State Mendel’s law of ‘Segregation of Gametes’. (v) What is the scientific name of the plant which Mendel used for his experiments on inheritance ? |
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Answer» (i) Phenotype of F1 generation – All plants with green coloured pods and with inflated pod shape Genotype of F1 generation – All plants with Ggli. Cross pollination (ii) 9 : 3 : 3 : 1 (iii) Possible combinations of gametes are as follows GI, Gi, gl, gi (iv) The two factors or genes controlling one character separate or segregate without blending or influencing each other during the formation of gametes so that each gamete receives one factor or gene for each character. OR Two members of a pair of factors separate during the formation of gametes. (v) Pisum sativum |
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