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Bio Words

TermDefinition
Acquired Characteristics Traits an organism develops during its lifetime (ex: stronger muscles).
Analogous structures Body parts with similar function but different ancestry/structure (ex: bird wing vs. insect wing).
Anatomical Adaptation A physical/body structure trait that helps survival (ex: thick fur, sharp claws). Artificial selection When humans choose which organisms reproduce to get desired traits (ex: dog breeds).
Artificial Selection When humans choose which organisms reproduce to get desired traits (ex: dog breeds).
Behavioral Adaptation An action or behavior that helps an organism survive (ex: migration, hibernation).
Biogeography The study of where organisms live now and where they lived in the past.
Convergent Evolution When unrelated species evolve similar traits because they live in similar environments.
Comparative embryology Comparing embryos of different species to see similarities that suggest common ancestry.
Divergent evolution When related species become more different over time, often due to different environments.
Endemic species A species found only in one specific location/region
Evolution Change in a population over time (changes in traits passed down through generations).
Evolutionary tree A diagram that shows evolutionary relationships and common ancestors.
Fitness How well an organism survives and reproduces in its environment
Fossils Remains or traces of ancient organisms preserved in rock.
Homologous structures Body parts with similar structure because of common ancestry, even if they have different functions.
Molecular evidence Evidence from DNA, RNA, or proteins that shows how closely related species are.
Mutation A random change in DNA that can create new traits/variation.
Natural selection The process where organisms with helpful traits survive/reproduce more, so those traits become common.
Niche An organism’s role in its environment (how it lives, what it eats, where it lives, interactions).
Pangea A supercontinent that existed long ago when all continents were joined together.
Paleontology The study of fossils and ancient life.
Physiological adaptation A body process or internal function that helps survival (ex: making venom, sweating, producing antifreeze proteins).
Scientific theory A well-tested explanation supported by lots of evidence (not a guess).
Species A group of organisms that can mate and produce fertile offspring.
Vestigial structures Body parts that have little or no function today but were useful to ancestors (ex: human tailbone).
Adaptation A trait that helps an organism survive and reproduce in its environment.
Created by: user-2022270
 

 



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