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body parts of organisms that are similar in structure but have a different function are called....
homologous structures
the study of embryo development from fertilization to birth is called....
embryology
the study of gene structure and function
molecular biology
the study of similarities and differences among structures (body parts) in organisms
comparative anatomy
body parts of different species that have the same function, but not the same structure
analogous structures
birds, reptiles, fish, and humans all have pharyngeal pouches as embryos. What does this tell us about these species?
they are related (have a common ancestor)
Which structures (homologous or analogous) show us that species are related?
homologous
body parts in an organism that no longer have a function (like your apendix)
vestigial structure
Which structures (homologous or analogous) show us that species are not related?
analogous
A whale pelvis and your appendix are examples of what type of structures?
vestigial structures
A whale fin and a human arm are examples of what type of structures?
homologous structures
An insect wing and a bird wing are an example of what type of structures?
analogous structures
What is Charles Darwin's theory that organisms change slowly over time?
theory of natural selection
What are variations that cause an organism to live longer and reproduce more?
adaptations
Ability to decrease their body temperature (in bats) is an example of what type of adaptation?
functional
Long necks in giraffes are an example of what type of adaptation?
structural
