10, 8. If the suffix '...genetica' had been used then the 8 could have come first. The extra words should reconcile in sequence of down clues : 22, 45, 31, 25, 35, 50, 21, 46, 47, 19, 27, 49, 39, 48, 24, 43, 20, 23. I don't agree that the puzzle was complex, as indicated earlier. There were various genetic or endocrine factors which might have been worked in there, however the opportunity was allowed to pass by. But better than last week...