DNA

Gene Expression and Traits

• Traits as Gene Expressions:

  • Traits represent the physical or functional expression of an individual's genes.

  • Key aspects include:

  • Physical Characteristics: Visible phenotypic features (e.g., straight thumb vs. hitchhiker's thumb).

  • Enzyme Production: Synthesis of specific enzymes required to catalyze essential biochemical reactions.

The Central Dogma of Molecular Biology

• Purpose of DNA:

  • DNA serves as the primary storage medium for genetic information, directing the production of functional proteins.

• Flow of Genetic Information:

  1. DNA (Information Storage)

  • Holds genetic instructions in the genome.

  • Transcribed into RNA through Transcription.

  1. RNA (Information Carrier)

  • Acts as a temporary messenger transporting genetic code.

  • Translated into proteins through Translation.

  1. Protein (Functional Product)

  • Executes cellular functions and determines physical and chemical traits.