BIOL 2153 Study Guide - Midterm Guide: Thymine, Mitosis, Adenine
Document Summary
Extending mendel"s analysis: garrod (1901) described the inheritance of a disorder called alkaptonuria in humans, bateson, a proponent of mendelism, recognized that the trait must be a rare, recessive character , soon after, sutton and boveri independently observed chromosome movement during cell division. Genes and chromosomes known to be defined dna sequences: genes are the physical units of heredity, as originally postulated by mendel; now, chromosomes are long molecules of double stranded dna and protein, which, sexually reproducing organisms usually have homologous pairs (or homologs), contain genes (compacting dna is crucial) two of each chromosome. Genetics central to modern biology: all life of earth shares a common origin, or progenote (a hypothetical candidate for the last universal cellular ancestor, the three domains of life, eukarya (true nucleus, multiple chromosomes, bacteria (no true nucleus, single chromosomes, archaea (no true nucleus, single chromosomes)
