Class 12 · Principles of Inheritance and Variation

F2 Genotypic Ratio in Dihybrid Cross — NEET Biology

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Can you, using the Punnett square data work out the genotypic ratio at the F2 stage and fill in the format given? Is the genotypic ratio also 9:3:3:1?

NCERT Biology · Class 12 · Chapter 4 · Paragraph 53
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Which of the following statements are true regarding the Punnett square shown in the figure? I. F₁ plants are heterozygous tall II. Selfing of F₁ gives both homozygous and heterozygous offspring III. Phenotypic ratio is 3 tall : 1 dwarf IV. Genotypic ratio is 2 TT : 1 tt : 1 Tt

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