yes different specific characteristics are called phenotypes, and yes using ideal characteristics vs. not ideal characteristics (for example, susceptible to cold if you live where its cold)..... You should be able to pick out some characteristics in veg and some in flower...... if you are looking for specific characteristics that occur in flower, then clone them all before they flower, then flower them as you veg the clones, and pick out the ones that show the most desirable characteristics when you see something in particular that sticks out to you that you like or dislike, process of elimination..... if there is a very ideal strain with very ideal characteristics that stick out in a good way, but one or two traits you would like to be different, it may be worth it to breed those females with males that show traits that are desirable in the areas the female lacked, and hopefully displays most or all of the traits you do like
my ladies got nothing but light today...... watering tomorrow