PSYC 102 Lecture 5: CRIM 101 - Lecture 5
13 Feb 2020
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Mz and dz and twins cont: mz (monozygotic) twins. Result from single sperm fertilizing single egg (two genetically identical babies) Share 100% of the 1% of dna that explains variation in characteristics: dz (dizygotic) twins. Result from 2 sperm fertilizing 2 eggs (no more similar than any other full siblings) Share 50% of the 1% of dna that explains variation in characteristics. The search for concordance: concordance = the degree to which related pairs exhibit a particular trait, behavior or characteristic, if mz twins exhibit an 85% concordance rate, and dz twins exhibit only a. Hormones: hormones (stored in glands) are part of our body chemistry, not our brain chemistry, hormones are released into the blood stream, and are circulated throughout the body, examples of hormones include insulin, cortisol, testosterone. Normal ; children fathered with barmaid wife were feeble-minded , and prone to criminality: led goddard to argue that feeblemindedness was inherited, and that feeblemindedness (low iq) contributed to criminality.
