Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Urine tests are really limited in that they only look for five to ____ substances.
nine

Inversions have the classic double loop at meiosis, and have ____ crossovers when heterozygotes.
no

Condors become sexually mature at about ____ or six years of age and mate for life.

five