Use obstinacy in a sentence about a two year old

Hi, I hope these sentences can help you with your assignment:

1.       No matter how much we explain to a 2-year old kid, his obstinacy is something natural to such age.

2.       Obstinacy may start as early as two years old, as parents we must be able to intervene and handle it correctly. 

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus