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Question
In an organism, tall phenotype is dominant over recessive phenotype, and alleles are designated as T and small t, respectively. Upon crossingtwo different individuals, total 250 offspring's were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus the genotype of the parents were
In an organism, tall phenotype is dominant over recessive phenotype, and alleles are designated as T and small t, respectively. Upon crossingtwo different individuals, total 250 offspring's were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus the genotype of the parents were
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Solution
The correct option is D Tt×tt
Total number of offspring = 250
Number of offspring displayedtall phenotype = 124
Number of offspring having small phenotype= 250 - 124
= 126
Ratio of tall to small = 124:126
= 1:1 (appx)
This ratio is obtained when the genotype of parents will be TT × Tt
Tt×tt
Total number of offspring = 250
Number of offspring displayedtall phenotype = 124
Number of offspring having small phenotype= 250 - 124
= 126
Ratio of tall to small = 124:126
= 1:1 (appx)
This ratio is obtained when the genotype of parents will be TT × Tt
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