The behavior of Bernoulli shifts relative to their factors

We present numerous examples of ways that a Bernoulli shift can behave rela tive to a family of factors. This shows the similarities between the proper ties which collections of ergodic transformations can have and the behavior of a Bernoulli shift relative to a collection of its factors. For example, we construct a family of factors of a Bernoulli shift which have the same entropy, and any extension of one of these factors has more entropy, yet no two of these factors sit the same. This is the relative analog of Ornstein and Shields uncountable collection of nonisomorphic K transformations of t he same entropy. We are able to construct relative analogs of almost all th e zero entropy counter-examples constructed by Rudolph (1979), as well as t he K counterexamples constructed by Hoffman (1997). This paper provides a s olution to a problem posed by Ornstein (1975).