What can occur in plants and animals that result in changes? (Choose all the apply)
a
random trait mutations
b
modifications
c
growth factors
d
none of the above

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?