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Ans:
It’s a phenomenon in which the F1 hybrid exhibits intermediate characters of the parental gene.
It is seen in flower colours of Mirabilis jalapa (4 O'clock plant and Antirrhinum majus (Snapdragon).
In a cross between true breeding red flowered (RR) and true breeding white flowered plants (rr), the F1 (Rr) was pink. When the F1 was self-pollinated the F2 resulted in the following ratio 1 Red (RR) : 2 Pink (Rr) : 1 White (rr). Here the phenotypic ratio deviates from the Mendel's monohybrid cross.
Both phenotypic and genotypic ratio will be the same 1:2:1.
![](https://static.wixstatic.com/media/bb7697_8f99cae947b9453d971aa1e7606c6228~mv2.png/v1/fill/w_54,h_85,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/bb7697_8f99cae947b9453d971aa1e7606c6228~mv2.png)
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