Читать книгу Lifespan Development - Tara L. Kuther - Страница 114

1 Why do twins occur? Consider the evolutionary developmental perspective discussed in Chapter 1. From an evolutionary developmental perspective, does twinning serve an adaptive purpose for our species? Why or why not?

2 Consider your own physical characteristics, such as hair and eye color. Are they indicative of recessive traits or dominant ones?

3 Do you think that you might be a carrier of recessive traits? Why or why not?

Table 2.2