DNA contains the genetic instructions that control all inherited traits. This molecular blueprint determines how genes work by specifying the sequence of proteins that create our characteristics. Understanding DNA structure reveals how genetic information flows from genes to proteins to observable traits.
đŦ Key Concepts
DNA stores genetic information in nucleotide sequences
Genes are specific DNA sections coding for proteins
Double helix structure enables accurate replication
Base pairing (A-T, G-C) ensures genetic fidelity
DNA â Gene â Protein â Trait Pathway
DNA
â
Gene
â
Protein
â
Trait
DNA Structure Features
The double helix consists of two antiparallel strands connected by complementary base pairs. This structure ensures genetic information can be accurately copied and transmitted to offspring.
Molecular Marvel!
If you could unwind all the DNA in a single human cell, it would stretch about 2 meters long, yet it's packed into a nucleus only 6 micrometers across - that's like fitting 20 miles of thread into a tennis ball!
đ¯ Learning Objectives
Understand how DNA structure enables gene function and learn how genetic information flows from DNA to proteins to create the traits we inherit from our parents.