DNA and RNA Flashcards
What does DNA stand for
Deoxyribonucleic Acid
Chromosomes
Consists of protein and DNA
Found in nucleus
DNA
> Discovered by Watson and Crick
Double Helix (twisted ladder)
Made up of nucleotides
-Each one made up of 3 parts
1. Phosphate
2. Deoxyribose Sugar (Carbohydrate)
3. Nitrogenous Base
Nucleotide
PHOSPHATE - SUGAR - BASE
Nitrogenous Base
Four bases: Adenine (A), Thymine (T), Guanine (G), Cytosine (C)
Each base has a Complementary Base
Nitrogenous Bases are connected by hydrogen bonds
Complimentary Bases
Each base can only join to a particular base
Adenine - Thymine
Guanine - Cytosine
P = Phosphate
D = Deoxyribose
P-D-A-T (Two Bonds)
P-D-T-A (Two Bonds)
P-D-G-C (Three Bonds)
P-D-C-G (Three Bonds)
Types Of Nitrogen Bases
—> P[y]rimidines - th[y]mine and c[y]tosine
…(Y in both T and C)
—> Purines - Adenine and Guanine
Genetic Code
Sequence of bases in DNA that provide the instruction for a cell, using RNA, to form a protein
Triplet (codon)