Question

write the schematic representative of mono hy brid cross ratio in 4'0 clock plat ? plz . answer this question within 7 hours .

Answer 1

The 4'O clock plant also known as Mirabilis jalapa , is an example for  incomplete dominance which is the phenomenon of equal expression of the dominant and recessive genes in the off spring. Let us have a look at the cross,
     Parents:        RR                    X                    rr
             (red colour                             (white colour
               Dominant)                              Recessive)
    Gametes: R and r
        Cross:              RR X rr
          F1 generation:      Rr     Rr       Rr       Rr
  Phenotype : Pink
Genotype : Heterozygous dominant.
Phenotypic ratio :  1:2:1
Genotypic ratio : 1:2:1
When the F1 plants are selfed,
Parents:      Rr X Rr
Gametes: R r and R r
Cross:      Rr   X Rr
F2 genereation:  RR     Rr     Rr    rr
                         (Red)   (Pink) (Pink) (White)
Phenotypic ratio : 1:2:1
Genotypic ratio : 1:2:1
Hope it is helpful for you