1. Plant Molecular biology Lap.1

2. Plant Molecular biology The field studies how the genes are transferred from generation to generation. Molecular genetics employs the methods of genetics and molecular biology.

3. Molecular genetics is the study of structure and function of genes at a molecular level.

4. Central dogma

5. Structure of DNA Components of DNA  DNA has two strands  A phosphate-deoxyribose polymer composes the backbone of the DNA  adjacent sugars are connected by phosphodiester bonds  nitrogenous bases are convalently bonded to the 1' carbon of the deoxyribose  the two DNA strands are antiparallel  the two strands are held together by hydrogen bonds between complementary bases  adenine hydrogen bonds (base pairs) to thymine  guanine hydrogen bonds to cytosine

6. When DNA replicates two idential DNA double helices are formed.

7. Structure of RNA :  The basic components of RNA are the same than for DNA with two major differences. 1. The pyrimidyne base uracil replace thymine 2. ribose replace deoxyribose.  Adenine and Uracil for a base pair formed by two hydrogen bonds.  Most cellular RNA molecules are single stranded.  The major role of RNA is to participate in protein synthesis,

9. The double helix