← Back to CoursesGenetics: Beginner

Neuroanatomy Explorer

Drag to rotate · scroll to zoom · click regions to explore

View
Loading 3D model…

Click a region
to explore it

Memory Deck

Flip each card and rate whether you knew it. Your score is saved.

Term
Definition

Deck complete — score saved.

Match the Pairs

Match each term to its definition. Finish the board to earn your score.

All matched — score saved.

Concept Constellation

Every key idea in this course, mapped as an explorable 3D constellation. Drag to rotate, scroll to zoom, click a node.

Click a node to read its definition.

How DNA Is Copied and Passed On

Manual: General · Subject: Genetics

Explain DNA replication and how genetic information is inherited during cell division and reproduction.

Copying information

Why DNA must be copied

Before a cell divides, it must copy its DNA so each new cell receives genetic instructions. This copying process is called DNA replication.

Base pairing

DNA copying works because bases pair in a predictable way: AA pairs with TT, and CC pairs with GG. This complementary matching helps preserve genetic information.

ℹ️

Accuracy matters

DNA copying is usually very accurate, but small mistakes can happen. These changes are called mutations.

Terms to know

Replication
The process of copying DNA.
Mutation
A change in DNA sequence.
Inheritance
The passing of genetic information from parent to offspring.
Cell division
The process by which one cell becomes two cells.

During DNA replication, AA pairs with:

What is a mutation?

Simplified DNA copying

  1. 1

    Step 1: The DNA double helix opens.

  2. 2

    Step 2: Each strand acts as a template.

  3. 3

    Step 3: Matching bases are added.

  4. 4

    Step 4: Two DNA molecules are produced.

Why is DNA replication important?