What do you think is the purpose of DNA ...why does it exist at all? Is DNA found in all creatures? How different is DNA among different creatures? A dog? A banana? A bacterium?. DNA The Blue Prints of Life!.
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What do you think is the purpose of DNA ...why does it exist at all? Is DNA found in all creatures?How different is DNA among different creatures? A dog? A banana? A bacterium?
The Blue Prints of Life!
The difference between your DNA and the person next to you is less than 0.1%.
You share about 96% of your DNA with a Chimpanzee, our closest relative on planet Earth.
You share about 60% of your DNA with a Banana.
What is a Genetic Code?
Do you understand how to match up the bases??? IF NOT ASK FOR HELP NOW!!!
Born: London, England, July 25, 1920
Died: London, England, April 16, 1958
Pioneer Molecular Biologist
There is probably no other woman scientist with as much controversy surrounding her life and work as Rosalind Franklin. Franklin was responsible for much of the research and discovery work that led to the understanding of the structure of deoxyribonucleic acid, DNA.
DNA replicationis an important process because as cell divide, it is critical that the two daughter cell are identical to the original cell.
Now we will look at how DNA replication take place.
Steps of replication:
Enzymes unzip DNA breaking hydrogen bonds between bases.
The two strands unwind.
Each DNA strand serves as a template for complementary bases.
Example: TEMPLATE DNA: TAC-GTT
NEW DNA: ATG-CAA
DNA replicates itself exactly so that each new cell will have an identical copy of the original DNA ladder.Process of DNA Replication
There are 3 different types:
Just like DNA, RNA is made of Nucleotides: A, U, C, G.
Notice, RNA does not contain thyamine (T) as a base, but instead has uracil (U).
So in RNA its AU and CG
Why make protein?
Proteins are needed for cell structure and movement, makes enzymes and nucleotides.
DNA is in the nucleus and can’t leave, so a messenger RNA-(mRNA) must bring the genetic information from the nucleus to the ribosomesin the cytoplasmTRANSCRIPTION
RNA nucleotides match up with the bases of DNA
Ex: DNA TGCACGCA
mRNAACGUGCGUSteps in Transcription
EXAMPLES OF CODONS
YOUR TEACHER WILL TEACH YOU HOW TO USE THE CODON TO IDENTIFY THE AMINO ACID
It carries the message or instructions on how to assemble something.
This message is carried from the nucleus to a ribosome which is located outside of the nucleus.
1. tRNA bind to the mRNA.
2. a “start” codon start the protein synthesis.
3. tRNA contains 3 complementary nucleotides to the mRNA called the anticodon; once it matches it leaves behind amino acid and next codon is read.