Final answer:
Molecular genetics primarily focuses on the biochemical structure and function of DNA, encompassing topics such as DNA replication, transcription and translation, gene regulation, and mutations.
Step-by-step explanation:
The focus of molecular genetics is the biochemical structure and function of DNA. This area of genetics delves into the molecular details of how genetic information is encoded, replicated, and expressed. It involves the understanding of DNA structure, DNA replication, the central dogma of molecular biology, which includes the transcription of DNA into RNA and the translation of RNA into proteins, gene regulation, mutations, and biotechnology applications like recombinant DNA and gene therapy.
While molecular genetics does touch on how genes are passed from parents to offspring (Pedigree, Mendel's Laws), and the relationship of genetic variation to an organism's environment (Population Genetics, Natural Selection), its primary focus is on the molecular level workings including the structure of DNA and the process of gene expression.