An introductory level with a single trait (coat color) lays the foundation for students to progress to more advanced two trait genetic patterns (coat color and eye color).
(An introductory level with a single trait; lays; the foundation for students to progress to more advanced two trait genetic patterns (coat color and eye color)) (students; to progress; to more advanced two trait genetic patterns)
An introductory level with a single trait students
lays to progress
the foundation for students to progress to more advanced two trait genetic patterns (coat color and eye color)
to more advanced two trait genetic patterns