In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: All loci have _ or two alleles.
[EX A]: one

[EX Q]: Trees can also be air layered but air layering usually takes four to _ months to be successful.
[EX A]: six

[EX Q]: Children usually outgrow food allergies by the time they are _ years of age.
[EX A]:
five