used interchangeably with “for example” or “such as.”
“The Summer Olympics is composed of a variety of sports (e.g., gymnastics, swimming, and tennis).”
“Many genes are involved in neural tube development, e.g., Sonic Hedgehog, BMPs, and the Hox genes.”
Note: because e.g. implies that other examples are being omitted, do not use etc. in the same list.
used interchangeably with “specifically” or “namely.”
“Only one city, i.e., London, has hosted the Summer Olympics three times.”
“Every genetics student learns the two basic methodologies in the field, i.e., forward genetics and reverse genetics.”