ANT101H5 Chapter Notes - Chapter 3: Dna Replication, Recombinant Dna, Cell Division
28 Jan 2017
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Genetics the study of how traits are transmitted from one generation to the next, and even though many physical anthropologists don"t actually specialize in genetics, it"s genetics that ultimately links the various sub-disciplines of biological anthropology. Needed to know how genetics and evolution works. Cells basic unit of all living things. Single cell bacteria; takes over the whole organism. Multicellular forms plants; composed of billions of cells. Prokaryotic cells 3. 7 billion years ago, single-celled organisms, represented today by bacteria and blue-green algae. Eukaryotic cells 1. 2 billion years ago, found in all multicellular organisms. Nucleotides two chains of smaller molecules composed in the dna molecule. Stacked on top of one another to form a chain that is bonded along its bases to another nucleotide chain, forming a spiral: 3 components: (1) sugar molecule (2) phosphate unit (3) 1 of 4 bases.
