This research examines the effect of gender and family resources on su
ccess in multiple areas of science. Science experiences are measured u
sing longitudinal science trajectories. Findings show that young women
are less likely than young men to persist in science, whether it is s
cience achievement, access, or attitudes. Large numbers of women perma
nently exit the science pipeline after their sophomore year of high sc
hool. However, results from the science trajectory models show that am
ong men and women who are equally qualified women are not necessarily
less likely to persist in science. Results also show that young men ha
ve more family resources than young women and some of the total effect
of gender on science experiences involves an indirect effect through
family resources. In addition, gender interacts with family resources
with the effects of many resources being stronger for women than for m
en.