Darwin and Lamarck Theories of Evolution: A Comparative Analysis

The video compares the theories of evolution by Charles Darwin and Jean-Baptiste Lamarck. Darwin's theory of natural selection, which is now a proven scientific fact, suggests that beneficial traits are passed down genetically. In contrast, Lamarck's theory of acquired characteristics, which has been disproven, proposed that traits acquired during an organism's lifetime could be inherited. The video uses examples like giraffes and okapis to illustrate these theories and concludes with a discussion on the impact of genetic discoveries on the acceptance of Darwin's ideas.

Who proposed the theory of evolution by natural selection?

• Alfred Russel Wallace

• Jean-Baptiste Lamarck

• Charles Darwin

• Gregor Mendel

According to Darwin, why do giraffes with longer necks survive?

• They can run faster.

• They are more attractive to mates.

• They have stronger immune systems.

• They can reach food in taller trees.

What was a major reason Darwin's theory was initially unpopular?

• It was too complex to understand.

• It contradicted religious beliefs.

• It lacked evidence of fossils.

• It was similar to Lamarck's theory.

What animal did Lamarck use to explain his theory of acquired characteristics?

• Zebra

• Elephant

• Okapi

• Giraffe

According to Lamarck, how do okapis develop longer necks?

• Through genetic mutation

• By natural selection

• Through selective breeding

• By stretching to reach higher leaves

What is a key flaw in Lamarck's theory of evolution?

• It does not account for genetic inheritance.

• It relies too heavily on fossil evidence.

• It only applies to aquatic animals.

• It was never published.

How does the example of hair color disprove Lamarck's theory?

• Hair color is not an acquired trait.

• Offspring inherit dyed hair color.

• Hair color changes are genetic.

• Hair color is not visible.

What scientific discovery supports Darwin's theory?

• Fossil records

• Genetic inheritance

• Meteorological data

• Geological formations

What does DNA sequencing reveal about evolution?

• Genes do not affect evolution.

• Genes are unique to each species.

• Genes are inherited from parents.

• Genes are randomly distributed.

Which theory has been scientifically validated?

• Neither theory

• Both theories

• Darwin's theory of natural selection

• Lamarck's theory of acquired characteristics