Answer
450 each of the blue-oval and white round, 50 each of blue-round and white-oval.
Work Step by Step
This is because you expect 1000 progeny. If there was no recombination, there should be equal numbers (500 each) of the original types, but the 10% recombination frequency means that there should be 10% less (450 each) of the original and a corresponding number of recombinants (50 each).
