Question

how was mendel able to derive postulates concerning the behaviour of unit factor during gamete formation when he could not directly.observe them

Answer 1

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The study and analysis of inheritance as a result of monohybrid crosses is called one-gene inheritance.

The cross between true-breeding pea plants with tall stems and dwarf stems is represent Mendel’s monohybrid crosses.

When Mendel crossed true breeding tall plants with dwarf plants, the resulting F1 generation consisted of only tall plants.

When members of the F1 generation were selfed cross, Mendel observed that 787 0f 1064 F2 plants were tall while 277 of 1064 were dwarf – a ratio of about 3:1.

Mendel made similar crosses between pea plants, exhibiting each of the other pairs of contrasting traits. In every case, the outcome was similar to the tall/dwarf cross.