Colonies occur when an animal produces many young asexually and they become detached from the original (parent) animal and result as an independent mass. a) true b) false

This one is worded a bit weird. In Biology a colony is several individuals (within the same species) living within close association. In microbiology, though, this statement is correct; (In microbiology) a colony is a mass of microorganisms all descending from a single mother cell, all the bacteria within a colony are genetic clones of the mother cell. 

Pro insulin undergoes extensive posttranslational modification along the production pathway .