Question

In a plant, a tall plant was crossed with a dwarf variety plant.
All F1 plants were tall. When two F1 plants were interbred,
9/16 of the F2 were tall and 7/16 were dwarf.
Explain the inheritance of height by
a) indicating the number of gene pairs involved ​

Answer 1

Answer:

Mendel crossed pure tall plant(TT) with a pure dwarf plant(tt). In the F1 generation, tall plants are formed(Tt). When F1 plant is subjected to self pollination, in the F2 generation, 3 tall plants and 1 dwarf plants are formed. In

the one homozygous tall plant (TT), 2 heterozygous tall plants(Tt), one homozygous dwarf plant(tt) are formed. Phenotypic ratio is 3:1, genotypic ratio is 1:2:1.

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