● Law of Dominance was based on the results of monohybrid cross (crossing plants with one contrasting characters).
● When two homozygous plants, with one contrasting character, is crossed, the character which is expressed in an F1 generation is known as a dominant character while the character which is not expressed in an F1 generation is known as recessive character.
● Example: If pure or homozygous tall plants (TT) are crossed with pure homozygous dwarf plant (tt), then we obtains all the plants in F1 generation (100%) as tall plants.
The appearance of all tall pants proves the law of dominance.
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