1. The problem statement, all variables and given/known data -(1)Difference between cross breeding and selective breeding.(2)cell or suspension culture -is it a step of tissue culture i.e has to be performed in every type of tissue culture OR is it a different kind( type)of tissue culture? 2. Relevant equations 3. The attempt at a solution(1)I think Cross-breeding is mixing different species. Selective breeding requires breeding of the same species.(2)I think cell or suspension culture is a step of tissue culture i.e has to be performed in every type of tissue culture .