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how do mendel's experiments show that traitsmay be dominanat or recessive?  
Asked by himanshi.updel | 27 Nov, 2018, 10:25: AM
answered-by-expert Expert Answer
  • In Mendel’s experiment of breeding tall (TT) and dwarf (tt) plants, Mendel found that all plants in the F1 generation were tall.
  • The F1 generation had genetic constitution Tt. It is genotypically a hybrid and a heterozygous plant having two different alleles, T and t.
  • Phenotypically, the plant is tall because the allele or the gene T for tallness masks the effect of its corresponding recessive gene t.
  • So, dwarf plants with genotype (tt) were not obtained in the F1 generation. This implies that out of two, one of the contrasting characters for a particular trait is dominant which masks the expression of the other character which then becomes recessive.
  • This experiment showed that traits may be dominant or recessive, depending on their expression in the F1 generation.
Answered by Sheetal Kolte | 27 Nov, 2018, 10:40: AM

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