Psychology 1000 Lecture Notes - Lecture 4: Allosome, Karyotype, Molecular Geometry

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Atkinson

Document Summary

Nature versus nurture: nature - so(cid:373)ethi(cid:374)g (cid:449)e"re (cid:271)or(cid:374) (cid:449)ith, nurture - something we learn. Critical period: environmental exposure at specific interval is critical, e. g. white crowned sparrow must hear adult song between 7th and 60th day. If they do not hear it then they will never learn the song of the white crown sparrow. If the alleles are the same on chromosomal pairs then its homozygous. Polygenetic effects: traits related to action of more than 1 gene or chromosome. Heritability: h^2 = variance due to genes/total variance. Identical twins: fraternal twins, parent, sibling, grandparent, uncle, aunt 25, 1st cousin. Sit cyril burt large scale study of twins reared apart reports h^2 approaching 1. 0: after he died, people found out his data was made up. Identical they get confused with each other not as close as with cognitive (for twins who were correctly labelled as identical versus frat)