BIO120H1 Lecture Notes - Lecture 18: Allele Frequency, Gamete, Eichhornia Crassipes

• School: UTSG
• Department: Biology
• Course: BIO120H1
• Professor: Spencer Barrett

Document Summary

Even though the habitats are close together, the pine-t(cid:396)ees" south fa(cid:272)i(cid:374)g slopes (cid:449)a(cid:396)(cid:373) faste(cid:396), and there are a different variety of organisms in the two, very close, areas. Population a group of individuals of a single species occupying a given area at the same time. Migration the movement of individuals from one population to another: prerequisite for gene flow (no gene flow, if there is no migration), but it does not (cid:862)e(cid:395)ual(cid:863) ge(cid:374)e flo(cid:449) Gene flow the movement of genes from one population to another. Key questions for evolutionary studies of variation within populations. Are some loci or traits more differentiated than the genome-wide average? (eg. skin colour) Effects of selection, gene flow and genetic drift on population divergence. Genetic drift, random process in which genes become different in a population. Drift and selection ge(cid:374)e flo(cid:449) (cid:373)akes it so that the populatio(cid:374) does(cid:374)"t (cid:271)e(cid:272)o(cid:373)e (cid:373)o(cid:396)e a(cid:374)d (cid:373)o(cid:396)e diffe(cid:396)e(cid:374)t o(cid:448)e(cid:396) time.