Evolution Theories contributing to Darwin's Descent with Modification

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What do homologous structures share?

Similar functions
Similar embryonic origin (correct)
Different embryonic origin
Different functions

What does biogeography provide evidence of?

Extinction of species
Origin of new groups
Changes within groups overtime
All of the above (correct)

What is the main function of vestigial structures?

Serve important functions in the organism's ancestors (correct)
Share similar functions with analogous structures
Perform vital functions in the current organism
Have no function in the current organism

Why is genetic variation a necessity for evolutionary change?

To allow populations to evolve in response to changing environmental variables (D) Signup and view all the answers

What did Lamarck's hypothesis propose?

Organisms changed their behavior in response to environmental change, which modified their organs and their offspring inherited those changes (C) Signup and view all the answers

What did Darwin observe about species from South America and the Galápagos Islands?

They resembled living species from the same region and other species from nearby regions, leading him to hypothesize about colonization and speciation (A) Signup and view all the answers

What is the main difference between natural selection and artificial selection?

Natural selection increases the adaptation of organisms to their environment over time, while artificial selection involves humans modifying other species through breeding for desired traits (C) Signup and view all the answers