By the way Science Fiction and drama can indeed be in the same story - they are not the same type of element.
Science Fiction: Science fiction is a
genre of
fiction dealing with
imaginative content such as
futuristic settings, futuristic
science and
technology,
space travel,
time travel,
faster than light travel,
parallel universes and
extraterrestrial life. It usually eschews the
supernatural, and unlike the related genre of
fantasy, its imaginary elements are largely plausible within the
scientifically established context of the story. Science fiction often explores the potential consequences of scientific and other
innovations, and has been called a "literature of ideas."
Fiction: Fiction is
content, primarily a
narrative, that is derived from imagination, in addition to, or rather than, from history or fact.
Drama: Drama is a literary type (along with comedy, epic, erotic, romance, satire, tragedy et al). Each type (and I did not list them all) has characteristics - Drama for instance is characterized by the seriousness of its tone.
{By the way, if you have the interest a good primer on this is Harmon and Holman's "A Handbook to Literature"}
So this is how Science Fiction can be drama, comedy and so forth.