The probability of producing offspring with each genotype and phenotype can be calculated using the laws of probability. In a dihybrid cross, the genotypic proportions can be determined by the forked-line method. The phenotypic ratios will be the same as the genotypic ratios.
The probability of producing offspring with each genotype and phenotype can be calculated using the laws of probability. In a dihybrid cross with the genotypes AABBCC and Aabbcc parents, the genotypic proportions can be determined by the forked-line method.
Each parent contributes one allele for each gene, resulting in 2^3 = 8 possible genotypes. Out of these, the genotypes AABBCC and Aabbcc will have a probability of 1/8 each, as there is only one possible combination for each. The remaining 6 genotypes will have a probability of 1/8 each.
The phenotypic probabilities can be determined based on the genotypes.
If each gene determines a distinct phenotype, then the phenotypic ratio will be the same as the genotypic ratio.
In this case, the phenotypic ratios will be 1/8 for each of the genotypes AABBCC and Aabbcc, and 6/8 for the remaining genotypes, resulting in a 6:1 phenotypic ratio.