DNA. Deoxyribose Nucleic Acid. DNA…your book of life. http://www.cbsnews.com/8301-3445_162-57556650/a-need-to-know-the-worst-news-you-will-ever-hear/ Would you want to know?. The information stored on DNA from one human cell. Equals the amount of information in 1000, 500 page books.
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Deoxyribose Nucleic Acid
stored on DNA
from one human cell
Equals the amount of
in 1000, 500 page books.
The structure was discovered in 1953 by two scientists: James Watson & Francis Crick
Double Helix=shape of DNA James Watson & Francis Crick
Nitrogen Bases James Watson & Francis Crick
Purine = Adenine (A), Guanine (G)
Pyrimidine =Thymine (T), Cytosine (C)
*All 3 have a Y
Watson’s Discovery Watson's Ideas
Base Pairing James Watson & Francis Crick
Nitrogen Bases attached to Deoxyribose (sugar)
http://www.dnalc.org/resources/3d/21-chargaff-ratios.html Chagraff’s Rule
Hydrogen bonds James Watson & Francis Crickare the glue that hold everything together
Sugar – Deoxyribose
Phosphate Groups (spacer)
Nitrogen Bases – Code of Life in ATCG
Thymine always pairs with Adenine
Guanine always pairs with Cytosine
What makes up the “Backbone” of the DNA Double Helix? James Watson & Francis Crick
Which structure in the backbone is directly attached to the Nitrogen bases?
What are the “spacers” between each step?
Why were Mike&Ikes a good example for the purines?
Why were Skittles a good example for the pyrimidines?
DNA Replication can divide. – DNA makes a copy of itself
Important during meiosis & mitosis because it makes sure the daughter cells have the appropriate number of chromosomes.
If the original strand of DNA is AATTGGCC
The complementary strand of DNA is TTAACCGG