DNA is an unbranched polymer made up of nucleotides that contains the genetic program for all life. DNA contains the complete set of instructions to develop a complete organism from a fertilized egg. The genetic code for why organisms like onions and monkeys differ is contained in the differences in their DNA sequences. Nucleotides, the building blocks of DNA, contain nitrogenous bases, pentose sugars, and phosphate groups. The nitrogenous bases in DNA are either purines (adenine and guanine) or pyrimidines (cytosine and thymine).

1. STRUCTURE OF DNA
Genetics

2. DEFINITION
DNA IS AN UNBRANCHED OR A
LINEAR POLYMER OF
NUCLEOTIDES.

3. IMPORTANCE OF
DNA

4. ALL LIFE PROGRAM IS STORED IN DNA.
DNA
RNA ( FUNCTIONAL COPY )
PROTEINS
FUNCTIONAL/REGULATORY STRUCTURAL
Master plan of life DNA

5. WHY ONION IS ONININ AND MONKEY IS
MONKEY?
◦ BECAUSE THEY HAVE DIFFERENT DNA
◦ In a fertilized ovum all the genetic material which is present over there
have all the complete
Program to make structurally and functionally a complete organism.
All the programming is basically present in DNA.

6. RAW MATERIALS TO
MAKE NUCLEOTIDES

7. ◦A single Nucleotide
is composed of :
◦Nitrogenous bases
◦Pentose ( Sugars) &
◦Phosphate groups

8. NITROGENOUS
BASES
These Are Simply The Nitrogen
containing carbon rings.

9. TYPES OF NITROGENOUS BASES
PURINES PYRIMIDINES
Adenine Guanine Cytosine Thymine/URACIL

10. Pentoses