(See related pages)
|
|
|
| Guidepost 1 How does conception normally occur, and how have beliefs about conception changed? |
|
|
|
| Guidepost 2 What causes multiple births? |
|
|
|
| Guidepost 3 What causes infertility, and what are alternative ways of becoming parents? |
|
|
|
| Guidepost 4 What genetic mechanisms determine sex, physical appearance, and other characteristics? |
|
|
|
| Guidepost 5 How are birth defects and other disorders transmitted? |
|
|
|
| Guidepost 6 How do scientists study the relative influences of heredity and environment, and how do heredity and environment work together? |
|
|
|
| Guidepost 7 What roles do heredity and environment play in physical health, intelligence, and personality? |