The phenotype is the type of trait that can be physically observed in an individual. Examples include hair colour, eye colour or height.
There are so many examples for that in different areas, like TPBi experiment carried out in our lab recently.Here's one link: http://www.alfa-chemistry.com/tpbi-cas-192198-85-9-item-282866.htm
First blank: The mobility of their hosts same goes for the second one :)