Evolution/Natural Selection/ Common Ancestry
Flashcard
•
Science
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are vestigial structures?
Back
Vestigial structures are body parts that have lost their original function through evolution. An example is the wings of ostriches.
2.
FLASHCARD QUESTION
Front
What are homologous structures?
Back
Homologous structures are anatomical features in different species that share a common ancestry, even if they have different functions. An example is the forelimbs of humans and whales.
3.
FLASHCARD QUESTION
Front
What is the significance of DNA and RNA analysis in evolution?
Back
DNA and RNA analysis helps classify organisms and understand their evolutionary relationships, indicating how closely related different species are.
4.
FLASHCARD QUESTION
Front
What is mimicry in the context of evolution?
Back
Mimicry is when one species evolves to resemble another species for protection or other advantages, such as the king snake resembling the deadly coral snake.
5.
FLASHCARD QUESTION
Front
What does variation mean in evolutionary biology?
Back
Variation refers to the differences in traits among individuals of the same species, which can lead to natural selection.
6.
FLASHCARD QUESTION
Front
What is natural selection?
Back
Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.
7.
FLASHCARD QUESTION
Front
What is adaptive radiation?
Back
Adaptive radiation is the process by which a single ancestral species rapidly diversifies into a wide variety of forms to adapt to different environments.
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