Experiments of mendel - monohybrid crosses, Biology

EXPERIMENTS OF MENDEL

MONOHYBRID CROSSES

When only a single pair of contrasting or differentiating traits is considered in a cross (or inheritance of only one pair of contrasting traits is studied in a cross), it is called monohybrid cross, e.g ;

1012_monohybrid cross.png

 

The two forms of the trait appear in F2 generation in ratio of three dominant to one recessive, 3 : 1. It is also called monohybrid ratio. For example, in the character of height (cross tall X dwarf) Mendel obtained 787 tall and 277 dwarf plants (ratio 2.84 : 1). A similar result for flower colour was 705 red to 224 white (ratio 3.15 : 1).

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