TOPICS 7.6 - 7.8 EVIDENCE FOR
EVOLUTION AND COMMON ANCESTRY
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
Biogeography - ANSWER The study of where organisms live and how they came to live where they do
Comparative Embryology - ANSWER The study of the formation, early growth, and development of
different organisms to determine evolutionary relatedness.
Comparative Anatomy - ANSWER The study of the body structures (morphology) in different organisms
to determine evolutionary relatedness.
Biochemical Evidence - ANSWER Examines the nucleotide and amino acid sequences of DNA and
proteins from different species to determine evolutionary relatedness.
Fossils - ANSWER A preserved remnant or impression of an organism that lived in the past. Example of
geological evidence for evolution
Homology - ANSWER Anatomical similarities due to common ancestry.
Homologous Structures - ANSWER Structural features that originated in a common ancestor, similar in
structure but may differ in function.
Analogous Structures - ANSWER Structures that share a common function, but are not similar in
structure, demonstrates that species evolved independently of one another; attributed to convergent
evolution.
Vestigial Structures - ANSWER Remnants of functional structures that were once useful in the ancestor of
the modern day organism, demonstrates common ancestry.
Extinct - ANSWER No longer existing or living.
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