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

[EX Q]: Involuntary manslaughter carries up to _ years in prison.
[EX A]: five

[EX Q]: Melanocytes are dendritic and are distributed roughly _ per six basal cells.
[EX A]: one

[EX Q]: Most scientists currently recognize seven living species of sea turtles grouped into _ genera.
[EX A]:
six