BIOL 1108 Study Guide - Summer 2018, Comprehensive Midterm Notes - Evolution, Dna, Ploidy
Document Summary
Genetic variation: fruit flies are much more variable in genetic make-up than humans (10x more) and penguins (5x more)! Advantageous then recombination gives new combinations not present in parent population. If we express evolution in terms of change in allele or genotype frequency . We can use any one or several of and of the following measurable characteristics: observable physical traits, relative size of genes: gel electrophoresis, specific genetic code: dna sequencing. The great apes: our place in the lineage. Remember that questions of lineage for all organisms have three potential pools of information that will then inform the systematics: the fossil record, the dna (molecules, the physical features (anatomy) Core concept: anatomical, molecular, and fossil evidence shows that the human lineage branches off the great apes tree. Hominins have been walking upright for at least 3. 2 million years. Ardipithecus ramidus (ardi) was bipedal on land but quadrupedal in trees. Somewhere between ardi and lucy, hominins went fully bipedal.
