Final answer:
In genetic crosses, determining the phenotypic ratio between heterozygotes involves understanding Mendel's laws of inheritance, which predict a 3:1 ratio of dominant to recessive traits.
Explanation:
The phenotypic ratio in the cross of two heterozygotes can be determined using Punnett squares. In this case, when crossing two heterozygotes, the phenotypic ratio would be 3:1, meaning 3 individuals would exhibit the dominant trait phenotype and 1 individual would exhibit the recessive trait phenotype.
This ratio follows Mendel's laws of inheritance, showcasing the segregation of alleles during gamete formation. By analyzing the genotypes of the parents, we can predict the phenotypic ratios of the offspring accurately.
Understanding Mendelian genetics principles is crucial in predicting the outcomes of genetic crosses and determining the ratios of phenotypes in offspring.
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