<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation
Our Terms of Use (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use.
You are viewing an older version of this Concept. Go to the latest version.

DNA Structure and Replication

Describes the DNA double helix and how DNA is copied.

Atoms Practice
Estimated5 minsto complete
Practice DNA Structure and Replication
Estimated5 minsto complete
Practice Now
Turn In
Structural Genes

Structural Genes

Other important discoveries about DNA were made in the mid 1900’s by Ewin Chargraff. The nitrogen bases of DNA were about Adenine, Guanine, Cytosine, Thymine. The shape of the DNA is a double helix.

Think about DNA as a ladder. The two rungs of the ladder cannot stand without the connections between them. These rungs are custom fit, and only 4 types can fit.

This is similar to the structure of DNA. The rungs holding the sides together were Adenine Thymine Cytosine Guanine holding the sides together. Adenine can only bond with Thymine. Guanine can’t bond with Cytosine.

Creative Application:

What four letter group would bond with ATGC?

What are the four letter group that would bond with CTGA

Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Please to create your own Highlights / Notes
Show More

Image Attributions

Explore More

Sign in to explore more, including practice questions and solutions for DNA Structure and Replication.
Please wait...
Please wait...