Homologous and Analogous Structures Lesson

Proof of Evolution: The Sequel

Biology

Poll

How are we today?

• Happy

• Sad

• Hungry/Hangry

• Bored

• Tired

Biology?

Bio = Life !

Biology is the study LIFE, or living organisms.

Commonalities in Anatomy

• Comparative Anatomy: The study of comparing structures among different living species.

• Homologous Structures: Body parts inherited by a common ancestor.

• Analogous Structures: Body parts that function the same, but are structurally different.

Developmental Biology

• Embryology: The study of embryos, leading up to birth.

• Pharyngeal Pouches: A feature present in the embryos of vertebrates.

Molecular Biology

• Molecular Biology: The study of gene structure and function.

• Comparing Sequences: An analysis of DNA Sequences across different species.

• Divergence: The idea that DNA mutations over time causes animals to be less related than others.

Multiple Choice

True or False: If a dog and cat have similar bones, despite their sizes, they are still related.

• True

• False

Multiple Choice

Pharyngeal Pouches can be found in which group of animals?

• Invertebrates

• Vertebrates

• Mammals

• Sea Critters

Open Ended

How was today's class? (Use complete sentences.)