Biology Explained

Genetics

DNA, genes, inheritance and gene editing.

Genetics

How DNA Replication Works: Enzymes, Strands and Accuracy

How cells copy DNA: helicase opens the helix, polymerase builds new strands 5 to 3, and proofreading keeps errors rare.

5 min read
Genetics

How Mendelian Inheritance Works: Alleles, Crosses and Ratios

Gregor Mendel's two laws explained with Punnett squares for monohybrid, dihybrid and test crosses, plus the limits of the rules.

5 min read