PSYCO104 Lecture 8: psych 104 oct 4

• School: University of Alberta
• Department: Psychology
• Course: PSYCO104
• Professor: Christopher Lepine

Document Summary

Its hereditary material in humans and almost all other organisms. Nearly every cell in persons body has the same dna. Most dna is located in the cell"s nucleus (nuclear dna) Its composed of 2 polymers of nucleotides. Molecule resembles a spiral staircase of complementary base pairs. Nitrogen base ( a g c t) Each cell has 46 chromosomes (23 pairs) Genes constitute distinct regions on the chromosomes. Each gene codes for a protein product. Heredity encoded in combination of bases of adenine, thymine guanine and cytosine. Alleles are alternative form of a gene that produces different characteristics. Genes contain bases, carry codes for protein manufacture. We receive two copies of a gene one from each parent. Dominant genes will be expressed if you have only one copy. Recessive genes will only be expressed if you have both copies. 200 genes may be from bacteria inserted into early acne. Few behaviors are controlled by single gene.