Table 1.

Sequence of core courses in the original and revised biology major

	Original curriculum (available until 2003)	Revised curriculum (available in 2000, required in 2003-present)
Semester 1	*Zoology (BIO 121) or *Botany (BIO 122)	*BIA (Bio 116) *TCBL (BIO 115)
Semester 2	Zoology (BIO 121) or Botany (BIO 122)	*Zoology (BIO 221) or *Botany (BIO 222)
Semester 3	Begin upper-level core courses (300-level): *Ecology (BIO 330) *Genetics (BIO 333) *Microbiology (BIO 300) or Cell Biology (BIO 321)	Zoology (BIO 221) or Botany (BIO 222)
Semester 4–8	Continue upper-level core & elective courses (≥300-level)	Upper-level core & elective courses (≥300-level): *Genetics (BIO 333)

An asterisk (*) indicates a required core course.