DNA: The Code of Life.

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Presentation transcript:

DNA: The Code of Life

Why are lobsters blue? https://www.youtube.com/watch?v=e2n1cwAXbaY

DNA Because there are so many possible combinations of bases and genes, each individual organism has a unique set of DNA. DNA can be found in all of the cells of your body except for red blood cells!

DNA contains the genetic information for cells to make proteins DNA contains the genetic information for cells to make proteins. Proteins determine a variety of traits, from hair color to an organism’s ability to digest food.

It took almost 100 years after the discovery of DNA for scientists to figure out that it looks like a twisted ladder. r.

Order of the bases http://www.youtube.com/watch?v=0_b80fHmuWw

http://learn. genetics. utah http://learn.genetics.utah.edu/content/begin/dna/builddna/ http://www.zerobio.com/drag_gr9/DNA/dna.htm

DNA Marshmallow lab Today you are making a DNA model using white and colored marshmallows, cheerios and spaghetti! http://dj003.k12.sd.us/science%20labs/DNA%20marshmallow%20lab/dna_marshmallow_lab_name.htm

Part 2 marshmallow lab Replication DNA REPLICATION – occurs in the nucleus of a cell. is the process in which and identical copy of a DNA STRAND IS FORMED FOR A NEW CELL It ensures that each daughter cell will have all of the genetic information it needs to carry out its activities.

RNA is different from DNA single stranded double stranded found in the cytoplasm and the nucleus only found in the nucleus has ribose as a sugar has deoxyribose as a sugar has nucleotides adenine, uracil replaces thymine, cytosine, and guanine has nucleotides adenine, thymine, cytosine, and guanine

There are two kinds of RNA 1.MESSENGER ribonucleic acid (mRNA)- copies the coded message from the DNA in the nucleus mRNA will copy adenine with uracil instead of thymine mRNA carries the transcription message off the DNA into the cytoplasm, mRNA attaches to a ribosome 2.TRANSFER RNA (tRNA)- carries amino acids coded for with three nucleotides the amino acids then are add to the growing protein.

http://www.stolaf.edu/people/giannini/flashanimat/molgenetics/dna-rna2.swf