How many kinds of phenotypes would you expect in f2 generation in a monohybrid cross codominant?
Answers
Explanation:
You can expect two phenotypes. Answer: In F2 generation of a monohybrid cross there is no chance of codominance.
both the genes express themselves equally in the heterozygous condition. Therefore, three different kinds of phenotypes would be seen in the F2 generation in a monohybrid cross.
Example: Colour inheritance in snapdragon.
Red flower: RR; White flower: rr
F1 generation: RR * rr
↓
Rr
F2 generation: Rr * Rr
↓
RR Rr Rr rr
Three phenotypes are seen i.e. Red (RR), pink (Rr) and white (rr).
According to the law of dominance, the phenotype of Rr should be red since R is dominant over r. But Snapdragon does not follow Mendelian inheritance. R is not able to completely express itself over r. This results in a third phenotype (here, pink).
Therefore, three phenotypes are seen in F2 generation in a monohybrid cross.