PSYC 100 Lecture Notes - Lecture 3: Twin, Zygosity, Guanine

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Caroline F Pukall

Document Summary

Week 3: (genetics and evolution) lecture & online lesson note. Describe how traits are inherited: discuss whether it is possible to separate the influences of nature and nurture on development. The origin of behaviours was believed to be that is comes from your genes(nativism) or the environment in which you gained experience in (empiricism). Nativism: the philosophical view that we are born with knowledge already present. Genes affect the environment, and the environment affects gene expression; so these two factors interact at every level. Thus, almost all behaviour results from both nature and nurture: define dna, genes, and chromosomes. Dna: genetic material of all organisms that makes up chromosomes; resembles a twisted ladder, with strands of sugar and phosphates connected by rungs made from nucleotide molecules of adenine, thymine, guanine, and cytosine. Genes: small units of dna that direct the synthesis of proteins and enzymes and result in the expression of inheritable traits.