Class 12 · Principles of Inheritance and Variation

F2 Tall Plants & Segregation — NEET Biology

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Mendel self-pollinated the F2 plants and found that dwarf F2 plants continued to generate dwarf plants in F3 and F4 generations. He concluded that the genotype of the dwarfs was homozygous – tt. What do you think he would have got had he self-pollinated a tall F2 plant?

NCERT Biology · Class 12 · Chapter 4 · Paragraph 27
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Which of the following statements are correct regarding true-breeding lines in the context of Mendelian genetics? S1. A true-breeding line consistently shows stable trait inheritance and expression for several generations upon continuous self-pollination. S2. They are produced by repeatedly crossing individuals with different desirable characters. S3. Mendel used true-breeding lines to ensure that the parental generation exhibited homozygous traits. S4. True-breeding lines are unsuitable for hybridisation experiments because they lack genetic variation. S5. If a true-breeding tall pea plant (TT) is self-pollinated, all its progeny will exhibit the dwarf phenotype.

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