College Genetics - Reference Guides
Document Summary
Genetics is concerned with heredity and variation. All living things are products of both nature and nurture; the heredity unit (gene) provides an organism with its nature (that is, biological potential and limitations), while environment provides nurture components. Interaction of nature and nurture provides organisms with distinct anatomical, physiological, biochemical, and behavioral characteristics. Genes reside in a long molecule called deoxyribonucleic acid (dna); along with histones, dna forms nucleosomes that organize into structures with distinctive staining properties called chromosomes found in cell s nucleus. Curie (ci): unit used to express activity of radioactive substance. 1 ci = 1000 mci = 3. 7 1010 disintegrations/ second. 1 becquerel = 1 disintegration/second = 2. 7 10-8 mci. 1 mci = 3. 7 107 becquerels. 8 to 114(cid:13) nucleotide(cid:13) pairs per(cid:13) linker (cid:13) (cid:13)dna. U phenylalanine leucine leucine isoleucine methionine (initiator) valine (initiator) Amber (terminator) histidine glutamine asparagine lysine aspartate glutamate.
