Parent Phenotype:
Red petal x Red petal
Parent Genotype:
Rr x Rr (both parents are heterozygotes)
Meiosis:
The alleles need to be separated one into each type of gamete.
1/2R, 1/2r (50 percent chance that the pollen grain will carry each of these)
Random Fertilization
Genotypes of the offspring:
RR : 2 Rr : rr
Phenotype ratio:
Red : Red : White, 1 : 2 : 1
- There is a 3 : 1 ratio (Red : White)(75% : 25%)(3/4 : 1/4)
These are probabilities, it depends which pollen grain fertilizes which ovule.
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