ANTH 225 Chapter Notes - Chapter 3: Uracil, Y Chromosome, Intron
24 Oct 2017
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Document Summary
Introduction various sub disciplines of biological anthropology are ultimately connected by genetics. Cells cells are the fundamental units of life in all organisms multicellular forms are composed of billions of cells adult human body has 1 trillion cells eukaryotic cells structurally more complex cells. Dna directs all cell activities composed of two chains of units called nucleotides. Made up of three components sugar molecule phosphate group one of 4 nitrogenous bases adenine (a) thymine (t) guanine (g) cytosine (c) 90,000 different proteins different number and sequence of their amino acids it"s the sequence of dna bases that ultimately determines the order of amino acids in a. What is a gene? original definition - a segment of dna that specifies the sequence of amino acids in a particular protein substantially modified humans have 21,000 genes and 90,000 proteins. Dna is molecule that governs the expression, inheritance, and evolution of biological traits in all forms of life.
