A cross is made between pure tall and pure dwarf plant: a) Write the genotype and phenotype of F1 . Give reason for the phenotype .b)Write the different type of F2 progeny obtained along with their ratios when F1 progeny selfed .
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a)Phenotype : Tall
Genotype : Tt
Phenotype is tall but in hybrid condition.Because when pure tall (TT)plant is crossed with pure dwarf (tt)plant to form new hybrid(Tt) plant.
b)The different type of F2 progeny obtained by selfing F1 generation
Phenotypic ratio= 3:1 i.e. 3 Tall: 1 Dwarf
Genotypic ratio = 1:2:1
i.e. TT=1,Tt=2,tt= 1
This is MONOHYBRID CROSS.
Genotype : Tt
Phenotype is tall but in hybrid condition.Because when pure tall (TT)plant is crossed with pure dwarf (tt)plant to form new hybrid(Tt) plant.
b)The different type of F2 progeny obtained by selfing F1 generation
Phenotypic ratio= 3:1 i.e. 3 Tall: 1 Dwarf
Genotypic ratio = 1:2:1
i.e. TT=1,Tt=2,tt= 1
This is MONOHYBRID CROSS.
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