Introduction to Genetics


Learn about the Human DNA

Introduction to Genetics

Genetics is the study of genes contained in the cells of almost all the living organisms in existence. Plants and mammals are all made up of a building block of tiny living cells.

A cell is made up of 3 main parts...
  • Nucleus.
  • Cell body.
  • Cell membrane or cell wall.
The nucleus of a cell contains many chromosomes, which are actually long strands of molecules called Deoxyribo Nucleic Acid (DNA). A gene is basically a small segment of a long DNA molecule, and genetics is the study of these genes.

Humans naturally have 23 pairs of chromosomes in the nucleus of every cell, for an all together 46 chromosomes.

Human Cell Chromosomes (23 Pairs)

123456
789101112
131415161718
1920212223 (X and Y)


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