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CBSE Class 10 Science 2023 All Sets Solutions

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Question : 14 of 20
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In an experiment with pea plants, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plant to pure short plants in F2F_2 generation will be
Solution:  
According to the question:
Parent generation TT (pure tall) x tt (pure dwarf)
gametes T t
F1F_1 generation Tt (heterozygous tall)
F2F_2 generation
Gametes Tt--->
Tt		Tt
TTTTt
tTttt
F2F_2 Genotypic ratio =1 pure tall (TT): 2 heterozygous tall (Tt): 1 pure dwarf (tt); thus, the ratio of pure tall to pure short plants will be 1:1.
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