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.
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