Mock Exam 3 .docx - Page 1 of 5 Mock Exam#3 Behavioral...

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Page 1 of 5 Mock Exam #3 – Behavioral Genetics True/False – aka Pure, Sweet Truth/Vile, Contemptible Lie (1 point each) 1.__T__ Epigenetics involves modifications of the activation of certain genes, but not modifications to the basic structure of DNA. 2.___T_ “Maze-bright” rats show greater improvement in an enriched environment than do “maze-dull” rats. 3.__F__ DNA replication takes place during translation…. S -phase 4.__F__ Heritability allows us to tell what percentage of a person’s trait are due to their genes and what percentage is due to their environment. 5.__T__ The ability to fly in birds and bats is an example of a homologous trait. Loose Association - aka WTH?! (1 point each) 6.__c__ Colorblindness a. Nondisjunction 7.__F__ Huntington’s Disease b. Quantitative 8.__e__ Sickle Cell Anemia c. X-linked 9.__D__ PKU-MR d. Recessive 10.__B__ Schizophrenia e. Single base mutation 11.__a__ Down Syndrome f. Dominant Short answer. Be specific. 12. What is heritability? (2 points) Heritability is a statistic used in the fields of breeding and genetics that estimates the degree of variation in a phenotypic trait in a population that is due to genetic variation between individuals in that population. 13. There is a woman who is colorblind. She mates with a man who is not colorblind. What is the probability that their sons will be colorblind? What is the probability that their daughters will be colorblind? Why are these probabilities different? (3 pts) Girls will most likely be carriers since x from dad is not colorblind and all boys will most likely be since x from mom
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