ANTHR101 Lecture Notes - Lecture 4: Dna Replication, Microevolution, Macroevolution

• School: University of Alberta
• Department: Anthropology
• Course: ANTHR101
• Professor: Francois Larose

Document Summary

Neutral mutations: mutations which have no positive or. Mutations- changes in dna sequence which alter the function or expression of the alleles. Insertions, deletions alter the order of nucleotides which sometimes change to proteins produced. Only new source of alleles in a species. negative advantage in an individual. Neither favoured or handicapped by natural selection. a harder time surviving or reproducing. development. For these benefits there are also costs associated. Having a larger brain requires more energy to sustain the organ. Negative mutations: individuals born with these alleles will have. Positive mutations: have a positive affect on human. Natural selection cannot occur if there are no mutations! Microevolution: the change in allele frequency from one generation to another. Macroevolution: over a long period of time microevolution produces more obvious changes in a species. Sexual reproduction: recombines the parents" dna to form new combinations creating unique individual offspring.