Cold Spring Harbor Laboratory
Specialized Chromosomes Determine Gender
Are you an XX or an XY? Budding scientists learn about cellular fertilization and the determination of gender in a thorough online lesson. They follow their study with a set of interactive reflection questions.
Curated OER
Quiz on Human Reproductive System
In this human reproduction instructional activity, learners complete an online interactive quiz about hormones, sexual development and human reproduction. There is also an option for a paper and pencil version.
Howard Hughes Medical Institute
Test Your Knowledge of Sex Determination
Humans, fruit flies, and reptiles have their own rules where sex chromosomes are concerned. Scholars flip through a slide show offering an explanation of the chromosomes that determine the sex of different species. What is female in one...