Answer:
Step-by-step explanation:
Molecular Biology is the field of biology that studies the composition, structure and interactions of cellular molecules such as nucleic acids and proteins that carry out the biological processes essential for the cells functions and maintenance. Molecular biology chiefly concerns itself with understanding the interactions between the various systems of a cell, including the interrelationship of DNA, RNA and protein synthesis and learning how these interactions are regulated. Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.
so, molecular biology and genetics is understanding the molecules involved genetics and heredity organisms