| evolution and, 25, 33, 121124
|
| fertilization and gender, 25
|
| genes and two sexes, 25
|
| mitochondria and, 2425
|
| ova, 25
|
| ovulation and testosterone levels, 100, 105, 106
|
| prolactin and milk production, 169
|
| seasonal changes in testosterone levels and birth statistics, 104
|
| slime mold, thirteen sexes, 2425
|
| sperm, 25
|
| testosterone and reproductive success, 122124, 123
|
| X and Y sex chromosomes and, 25
|
| Riad, Jasmin, 144, 145
|
|