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# Let's watch video 1 ## Body's Instruction: DNA ## Nucleus - Contains the entire DNA genome over 3 feet total length ## Chromosomes - Each tiny mass of DNA - 46 chromosomes - 23 from Mother + 23 from Father - X and Y chromosomes to determine if it's a Male XY or a Female XX ## DNA + pr...

# Let's watch video 1 ## Body's Instruction: DNA ## Nucleus - Contains the entire DNA genome over 3 feet total length ## Chromosomes - Each tiny mass of DNA - 46 chromosomes - 23 from Mother + 23 from Father - X and Y chromosomes to determine if it's a Male XY or a Female XX ## DNA + proteins = Nucleosomes # Genes: Those individual instructions # Get rid of those introns! - Before introns are removed, an RNA molecule is called pre-mRNA - Only the exons make it to translation # Nucleic Acid: Watch video 2 ## Biological Significance: 1. Responsible for storage and transmission of genetic information code 2. For the precise synthesis of protein characteristics of individual cells ## properties of nucleic acids 1. Insoluble in alcohol 2. Slightly soluble in cold water, but readily dissolved in hot water and dilute alkalis, forming alkali salts 3. Precipitated by HCl and by excess of $CH_3COOH$ (acetic acid).