DNA and Genetics: From Molecules to Traits

Genetics for Beginners is a learning path on Breni. It runs to 6 courses. It starts at beginner level. You finish able to explain the structural difference between DNA and RNA and how they store biological instructions. You finish able to trace the step-by-step process of how a gene becomes a functional protein.

  • 6 courses
  • 8 learning objectives
  • Level: beginner
  • Language: English
  • Price: Subscription, free trial

What you will be able to do

  • Explain the structural difference between DNA and RNA and how they store biological instructions
  • Trace the step-by-step process of how a gene becomes a functional protein
  • Predict the probability of inherited traits using Mendelian genetics
  • Analyze how mutations occur and their impact on health and evolution

Full curriculum

Part 1 · The Blueprint of Life

1. The Molecular Library

I hear about DNA on the news, but I have no idea what it actually looks like or where it is kept in my body — I want to visualize the molecule of life.

  • — Inside Your Body
    See how your body is built of tiny cells.
    • The Cell City
    • The Control Center
  • — The Packed Library
    Learn how DNA is neatly packed inside cells.
    • Thread and Spools
    • X Marks the Spot
  • — The Double Helix
    Visualize the famous twisted ladder shape of DNA.
    • Twisted Ladder
    • Sugar and Phosphate
  • — The Four Letters
    Meet the chemical letters that code your traits.
    • The Rungs of Life
    • A, T, C, and G

2. The Messenger and the Factory — How RNA Transcribes Genetic Code

I know DNA holds instructions, but I want to understand how those instructions actually travel out of the cell's nucleus to build things.

Part 2 · From Code to Characteristics

3. Protein Synthesis — Turning Chemical Letters into Living Tissue

I want to connect the abstract A, T, C, and G letters of genetic code to the actual muscles, enzymes, and traits that make up my body.

4. Dominant and Recessive Alleles — Why You Look Like Your Parents

I want to understand why I have my mother's eyes and my father's hairline using the basic rules of inheritance.

Part 3 · Heredity and Variation

5. Mutation and Evolution — When the Copying Process Goes Wrong

I want to know how genetic mutations happen spontaneously, why some cause diseases, and how others drive evolution.

6. Decoding the Family Tree — Synthesizing Heredity, DNA, and Traits

I want to bring together everything I've learned about molecules, proteins, and inheritance to fully decode a genetic pedigree chart.

Sample: The Molecular Library

The opening tier, (Inside Your Body). See how your body is built of tiny cells.

The Cell City

Name cells as the tiny blocks of your body.

The Control Center

Locate the nucleus inside a living cell.

Questions about Genetics for Beginners

What will I be able to do after this Genetics for Beginners path?

Explain the structural difference between DNA and RNA and how they store biological instructions. Trace the step-by-step process of how a gene becomes a functional protein. Predict the probability of inherited traits using Mendelian genetics.

What does the Genetics for Beginners curriculum cover?

The path is 6 courses, starting with The Molecular Library and ending with Decoding the Family Tree — Synthesizing Heredity, DNA, and Traits. Each course is graded across 4 tiers, from to .

How long does the Genetics for Beginners path take?

About 6 courses at a steady pace, across 6 courses. It is self-paced, so you can go faster or slower.

Do I need experience before starting Genetics for Beginners?

The path is pitched at beginner level. The first course opens with: I hear about DNA on the news, but I have no idea what it actually looks like or where it is kept in my body — I want to visualize the molecule of life.

Is the Genetics for Beginners path free?

The Genetics for Beginners path is part of a Breni subscription, which starts with a free trial. All 6 courses are in the Breni app on iPhone, Android and the web.

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