| disappearance of unimportant traits, 28, 33
|
| distal explanations, 26
|
| effect of climate on monogamy, 37
|
| horses and, 28
|
| human nature and, 26
|
| male moth and, 2627
|
| natural selection and, 2729
|
| proximal explanations, 26
|
| sex-linked behavioral characteristics, 31, 3233, 3435, 175
|
| sex-linked physical characteristics, 31, 32, 34
|
| sexual selection and, 2933
|
| speech and human advancement, 195
|
| testosterone and, 27,2829, 3536
|
|