PSYC 110 Lecture Notes - Lecture 4: Human Hair Color, Selective Breeding, Epigenetics
Document Summary
Hair color/ skin color depend on dominant or recessive genes: selective breeding. Epigenetics: traits that are heritable but not necessarily caused by changes in dna sequence (cid:894)e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t pla(cid:455)s a for(cid:272)e as (cid:449)ell a(cid:271)out (cid:449)hat ge(cid:374)es (cid:455)ou e(cid:454)press epi= a(cid:271)o(cid:448)e epige(cid:374)eti(cid:272)s= a(cid:271)o(cid:448)e ge(cid:374)eti(cid:272)s (cid:373)ore tha(cid:374) just ge(cid:374)eti(cid:272)s(cid:895) Different chemical markers which can be inherited but can also be shut off based on environment and things that happen (bad weather, harsh environment) Lamarckian inheritance- organisms can pass on acquired characteristics: giraffes have long necks because they were stretching to reach high leaves, blacksmith hits iron so he has big arms, so his kids have big arms (not necessarily true though) Darwin: would argue that giraffes have long necks because of a natural selection (?) Nuclear vs. mitochondrial dna: passed do(cid:449)(cid:374) (cid:448)ia the (cid:373)other"s egg, __ Functionary explanations stating the role that specific behaviors play in survival and reproduction: ex.
