explain the monohybrid cross by taking tall and dwarf plants
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Answer
For monohybrid cross, Mendel began with a pair of pea plants with two contrasting traits i.e., one tall and another dwarf. The cross-pollination of tall and dwarf plants resulted in tall plants. All the hybrid plants were tall. ... The tall and the short plants were in the ratio of 3:1.
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Answer:
○ TT, tt, and Tt are genotypes while the traits, tall and dwarf, are phenotypes.
○ T stands for tall trait while t stands for dwarf trait.
○ Even if a single ‘T’ is present in the genotype, phenotype is ‘tall’. When ‘T’ and ‘t’ are present together, ‘T’ dominates and suppresses the expression of ‘t’. Therefore, T (for tallness) is dominant trait while t (for dwarfness) is recessive trait.
○ TT and tt are homozygous while Tt is heterozygous .
○ From the cross, it can be found that alleles of parental pair separate or segregate from each other and only one allele is transmitted to the gamete.
○ Gametes of TT will have only T alleles; gametes of tt will have only t alleles, but gametes of Tt will have both T and t alleles.
