The Genetic Material

TRUCTURE FUNCTION AND FEATURES OF DO YOU KNOW

STRUCTURE OF DNA MOLECULES DNA molecules are made of nucleotides NUCLEOTIDES PHOSPHATE GROUP PENTOSE SUGAR NITROGEN BASE

S NITROGEN BASE PPHOPPPPPPHOSPHORIC ACID PENTOSE SUGAR PHOSPHATE GROUP PENTOSE SUGAR NITROGEN BASE NUCLEOTIDES

Sugar phosphate back bone Polynucleotide chain Formation of Poly NucleotidE

P S A P S C P S A P S C P S P S C A P S T P S P S T P S P S T P S G G G FORMATION OF DOUBLE STRAND Hydrogen Bond

WATSON AND CRICK: A MODEL of the DOUBLE HELIX

Features of the DNA Stable Universal Simple It can store information Its information content can be changed by mutation It can self replicate and produce identical copies

FUNCTIONS OF the DNA STORAGE OF GENETIC INFORMATION CONTROL OF CELLULAR ACTIVITIES ex. Protein synthesis TRANSFORMATION OF INFORMATION FROM ONE GENERATION TO ANOTHER

Replication of the DNA

Places Where DNA found Nucleus – Chromosomes contain DNA Mitochondria - In matrix Chloroplast – In stroma

Mitochondria Electron micrograph Back

Nucleus Back Chromosome

Chloroplast Back Circular DNA