1. Distinguish between genotype and phenotype. 2. Explain two characteristics that monozygotic twins usually have in common and state why this is so. 3. Discuss two ways in which dizygotic twins are likely to differ.
Case Study
In another approach to gene-environment interactions, the field of epigenetics looks beyond the genotype itself and studies how the same genotype can be expressed in different ways. In other words, researchers study how the same genotype can lead to very different
Genes affect more than our physical characteristics. Indeed, scientists have found genetic linkages to a number of behavioural characteristics, ranging from basic personality traits to sexual orientation to spirituality (for examples, see Mustanski et al., 2005; Comings, Gonzales, Saucier, Johnson, & MacMurray, 2000). Genes are also associated with temperament and a number of psychological disorders, such as depression and schizophrenia. So, while it is true that genes provide the biological blueprints for our cells, tissues, organs, and body, they also have a significant impact on our experiences and our behaviours.
Source: https://opentext.wsu.edu/psych105/chapter/3-1-human-genetics/
Questions
1. Distinguish between genotype and phenotype.
2. Explain two characteristics that monozygotic twins usually have in common and state why this is so.
3. Discuss two ways in which dizygotic twins are likely to differ.
4. Based on your understanding of evolutionary psychology and the nature-nurture debate, provide a reasonable explanation for the difference between Tiffany and her twin as it relates to cancer.
5. Does nature or nurture play a greater role in the development of psychological disorders? Explain.
Step by step
Solved in 5 steps
