What is DNA?
Evidence of Evolution

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Biology
•
6th - 7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
DNA (deoxyribonucleic acid) is the molecule that carries the genetic instructions for life and is used by scientists to find common proteins and amino acids to determine how closely related species are.
2.
FLASHCARD QUESTION
Front
What are homologous structures?
Back
Homologous structures are body parts that are similar in structure but may have different functions across different species, suggesting that these organisms share a common ancestry.
3.
FLASHCARD QUESTION
Front
What is a common ancestor?
Back
A common ancestor is a species from which two or more different species have evolved. Scientists compare organisms' DNA to support the theory that all species share a common ancestor.
4.
FLASHCARD QUESTION
Front
What are vestigial structures?
Back
Vestigial structures are body parts that have lost their original function through evolution. They provide evidence of an organism's evolutionary past.
5.
FLASHCARD QUESTION
Front
What is adaptive radiation?
Back
Adaptive radiation is the process by which organisms diversify rapidly into a wide variety of forms to adapt to different environments.
6.
FLASHCARD QUESTION
Front
What is the significance of fossils in evolution?
Back
Fossils provide evidence of past life forms and show how species have changed over time, supporting the theory of evolution.
7.
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.
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