Why do genetic studies provide deep information about living beings? Class 9

Why do genetic studies provide deep information about living beings? Class 9

Question 1.

Why do genetic studies provide deep information about living beings? Class 9

Answer:

Genetic studies provide deep information about living beings because every living cell contains genetic material (DNA), which carries the instructions for the organism's growth and function. Organisms with similar DNA are considered to have a common ancestry. By comparing DNA, scientists can determine how closely related different organisms are, trace evolutionary history, and discover relationships that are not apparent from external features alone.

Genetic studies have also revealed that microscopic life forms are far more diverse than previously believed - as shown by Carl Woese's three domain system (Bacteria, Archaea, Eukarya). Genetic information is more reliable and detailed than just comparing physical characteristics, because two organisms may look similar but have very different genetic make-up, or may look different but be closely related genetically.