ANTH 1120 Lecture Notes - Lecture 2: Medical Anthropology, Chronospecies, Species

• School: University of Guelph
• Department: Anthropology
• Course: ANTH 1120
• Professor: E.Finnis

Document Summary

Natural selection: all individuals vary. Successful traits are more likely to be passed on to the next generation. Therefore: favourable genetic traits are passed onto offspring. Strains of bacteria that have become resistant to standard antibiotic. Salt retention- gene, african and non african population. Alleles: gene: sequence of dna, alleles: different versions of the same gene, located at the same place (locus) on partner chromosomes. Some allele at same place locus) homozygous chromosomes: different alleles at same locus+ heterozygous chromosomes, dominant or recessive versions. If heterozygous dominant allele gets expressed, recessive allele recedes: but a person still carried the recessive. Discrete traits: generated at one site/locus, controlled by dominant or recessive alleles only. Traits controlled by genes at more then one locus. For example: skin tone, height, weight. Expression of polygenic traits can be influenced by the environment. Understanding evolution today: point 1, point 2, how do we proceed from microevolution to macroevolution (formation of new species, processes.