NLC

• Gene- a segment of DNA and is a basic unit of heredity
• DNA stand for- Deoxyribonucleic acid
• Where DNA locate?

  Nucleus
• What is the structure of DNA and RNA

  Double helix and single helix
• Chromosome- formed from a long strand of DNA molecule
• 46- number of human chromosome
• Fertilization- a process of making zygote
• 8- chromosome of fruit flies
• 34- number of chromosome of sunflower
• 78- number of chromosome of dog
• 24- rice chromosome
• 20- corn chromosome
• Mutation- a change that occur in our DNA sequence either due to mistakes of DNA copies, it as a result of Environmental. It occur during DNA replication
• The oxygen will diffuse into the alveoli and bond with hemoglobin inin the blood and the carbon dioxide of the blood diffuses with alveoli and will out through respiratory
• Aorta- largest artery
• Nitrogenous bases of DNA:

  Adenine

  Thymine

  Guanine

  Cytosine
• Nitrogenous ofof RNA:

  Adenine

  Cytosine

  Uracil

  Guanine 
• Ribose sugar is found in RNA
• Deoxyribose sugar is found in DNA