Darwin and Natural Selection (T)

• What theory did Charles Darwin develop?

  Theory of evolution by natural selection
• What was the main focus of Darwin's studies during his expedition?

  He studied the variety of living organisms and how it developed.
• What are the key components of Darwin's theory of evolution by natural selection?

  • Within a species, there is genetic variation.
  • Individuals with favorable characteristics are more likely to survive and reproduce.
  • Favorable characteristics are passed on to the next generation.
• In what year did Darwin publish his theory?

  1859
• Why was Darwin's theory of evolution by natural selection controversial at the time?

  It challenged religious beliefs, lacked evidence, and genetics was not understood.
• Who was Jean Baptiste Lamarck?

  A scientist who proposed a theory of how species change over time.
• What was Lamarck's idea about how characteristics are passed on to offspring?

  He believed that developed characteristics could be inherited by offspring.
• What is the main flaw in Lamarck's theory of evolution?

  • Changes that occur in an organism's lifetime cannot be passed on to offspring.
• How does Darwin's theory explain the survival of giraffes with longer necks?

  Longer necks allow giraffes to reach food, increasing their chances of survival and reproduction.
• What is the significance of Darwin's theory in biology?

  It explains how species change over time through natural selection.