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DNA
DNA Notes
| Term | Definition |
|---|---|
| Genes | Units of genetic material that codes for a specific trait |
| DNA and RNA are examples of | Nucleic Acids |
| DNA is made up of | Repeating molecules called Nucleotides (building blocks) |
| Nucleotide consists of three different structures | 1) Phosphate group 2) Sugar Deoxyribose 3) Nitrogenous Base |
| DNA Structure | Is called DOUBLE HELIX |
| DOUBLE HELIX was discovered by 3 scientist | 1)Fredrick Griffith 2) Rosalind Franklin 3) Watson and Crick |
| DNA had specific pairing between nitrogen Bases | Adenine... Thymine Cytosine....Guanine |
| DNA is made of 2 long strands of Nucleotides arranged in a specific way | Complementary Rule |
| Purines: | Adenine Guanine |
| Pyrimidine's | Thymine Cytosine |
| Adenine must pair with | Thymine |
| Guanine must pair with | Cytosine |
| Different arrangements of Nucleotides in a nucleic acid DNA provides | Key to DIVERSITY among living organism |
| The Code of the Chromosome | the specific order that bases occur. |
| Chromosomes | DNA is wrapped tightly around histones and coiled tightly |
| DNA is replicated to prepare for a cell division | During phase of a cell lifecycle. |
| Nucleus of the cell occurs during | DNA replication |
| Template | Each strand of the original DNA serves as a template for the new strand. |
| DNA Molecule | Will produce 2 identical new complementary strands at the completion of DNA replication. |
| Enzyme Helicase | Breaks the hydrogen bonds connecting the complimentary bases of the original DNA molecule. |
| Enzyme DNA Polymerase | binds the new nucleotides to the original strand and proof reads for mistakes in pairing |
| Helicase is doing this | The DNA molecule and allows for new complimentary nucleotides to match up with the nucleotides of the original template |