PSY 101 Chapter Notes - Chapter 11: Twin, Human Genome, Epigenetics
Document Summary
A human has about 46 chromosomes- 23 from mom and another 23 from dad. Are composed of a coiled chain of dna . Small segments of dna molecules; each individual has about. When turned on, genes give code for creating protein molecules ,the body"s building blocks. Example: humans and chimpanzees have similar genetic makeup, making us at least 96 percent identical to them. Example: a person"s height can tell about the size of one"s face, vertebrae, leg bones, etc, each of which might be influenced by different genes that play a part with one"s environment. Genes help explain both human nature and human diversity. : are created from one fertilized egg that splits into two. : are created from two separate fertilized eggs; they share a a prenatal environment, but are no more similar than brother and sister. : a person"s characteristic emotional reactivity and intensity: temperament differences typically persist:
