Final answer:
In genetics, the predicted frequency of recombinant offspring in a dihybrid test cross ranges from 0% to 50%, depending on whether the genes are linked or unlinked. A frequency prediction of 60% recombinant offspring is incorrect, and the correct answer to the provided question is that the frequency cannot exceed 50%. Option 2 is correct answer.
Step-by-step explanation:
In the context of genetics and inheritance, a test cross involving two traits (a dihybrid cross) can allow us to predict the frequency of recombinant offspring. The predicted frequency of these recombinants depends on whether the genes are linked (on the same chromosome and close together) or unlinked (on different chromosomes or far apart on the same chromosome).
For unlinked genes, Mendelian genetics states that the expected ratio of recombinant to parental types is approximately 1:1, which means that the maximum frequency of recombinant offspring would be 50%. However, for linked genes, the frequency of recombinant offspring can be less than 50%, as crossing over occurs less frequently with closer gene proximity.
Considering this, the statement that the predicted frequency of recombinant offspring could be as high as 60% is incorrect. The range of recombinant frequencies in a dihybrid cross is 0% to 50%. This limited range is due to the predictable patterns of inheritance displayed in homologous chromosomes during meiosis and the random assortment of genes that are far apart or on different chromosomes.
Therefore, the correct option is d. No, the predicted offspring frequencies range from 0% to 50%.