In which of the following cases will the genotypic and phenotypic ratio remain the same in the F2 generation?
Biology
PMC Practice 15
Variation and Genetics
Mendelian Inheritance
Elimination Tool:
The heterozygous phenotype in incomplete dominance is a type of inheritance in which the two homozygous phenotypes are blended in an intermediate manner. For instance, the F1 generation will have pink flowers (Rr) if a red flower (RR) is crossed with a white flower (rr). The F2 generation’s genotypic and phenotypic ratios, if the F1 generation (pink flowers) is crossed with one another, will be 1:2:1 (RR:Rr:rr) and 1:2:1 (red phenotype: pink phenotype: white phenotype), respectively. Due to the independent segregation of the alleles during gamete formation, the ratios will not change.
The heterozygous phenotype in incomplete dominance is a type of inheritance in which the two homozygous phenotypes are blended in an intermediate manner. For instance, the F1 generation will have pink flowers (Rr) if a red flower (RR) is crossed with a white flower (rr). The F2 generation’s genotypic and phenotypic ratios, if the F1 generation (pink flowers) is crossed with one another, will be 1:2:1 (RR:Rr:rr) and 1:2:1 (red phenotype: pink phenotype: white phenotype), respectively. Due to the independent segregation of the alleles during gamete formation, the ratios will not change.