 What is Dna? What are genes?

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PSY 352 Exam 2: Study Guide What is Dna? What are genes? What are chromosomes?
What is a genome
Difference between genotype and phenotype?
How do selective breeding, family studies, twin studies, and adoptive studies help us study behavioral genetic?
What Is the difference between monozygotic and dizygotic twins? Why is this difference important?
o Dizygotic: fraternal twins that are not genetically identical , they come from two eggs that were separately fertilized. They share only 50% of their genes o Importance of Difference: if fraternal twins are more similar than identical twins are for a given trait, then that trait would not be considered heritable, if the opposite is true for similarity between different sets of twins for a trait, then that trait can be considered heritable.

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