Answer:
b) False
In a testcross, the percentage of recombinant offspring depends on the distance between the genes being tested. If the genes are close together on the same chromosome, the percentage of recombinant offspring will be low. However, if the genes are farther apart, the percentage of recombinant offspring will be higher.
In the statement given, it is not specified whether the genes being tested are close together or far apart. Therefore, we cannot determine the percentage of recombinant offspring based solely on the information provided.
In summary, the statement "One equals 1% recombinant offspring in a testcross" is false because the percentage of recombinant offspring in a testcross depends on the distance between the genes being tested and is not always 1%.