DNA is the fundamental molecule of life that carries all genetic information. This double helix structure contains the instructions for building every protein in living organisms and determines all inherited traits. Understanding DNA is crucial to comprehending how variations arise during reproduction.
đŦ Key Concepts
Double helix structure with complementary base pairs
Contains genetic information in sequence of bases
Found in nucleus of every cell
Basis for all hereditary variations
Amazing Fact!
If you unraveled all the DNA in your body and laid it end to end, it would stretch about 10 billion miles - enough to reach from Earth to Pluto and back!
đ¯ Learning Objectives
By exploring this section, you'll understand how DNA structure enables variation and inheritance, and why small changes in DNA can lead to significant differences in organisms.