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Evolutionary Theory and Evidence of Ancestry Quiz

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Evolutionary Theory and Evidence of Ancestry Quiz

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Questions and Answers

What is the main mechanism by which organisms develop adaptations to their environments?

Natural selection (correct)

Mutation

Genetic drift

Gene flow

How do taxonomic classifications change over time?

Due to new discoveries and analysis of DNA (correct)

According to organism size

Based on geographic location

Through random selection

In the Linnaean system, what level of classification ranges from kingdom down to species?

Domain

Taxon (correct)

Phylum

Order

What is the main reason for using a standardized system to classify organisms?

To allow consistent references that all scientists understand Signup and view all the answers

How do scientists classify and identify organisms using dichotomous keys?

Using knowledge of the characteristics of taxa Signup and view all the answers

What is the distinguishing factor used by scientists to classify organisms into different kingdoms?

Cellular structure Signup and view all the answers

What is the main focus of evolutionary theory?

Describing how organisms develop gradually from past life forms Signup and view all the answers

Which type of evidence provides definitive proof of common ancestry among organisms?

DNA sequencing Signup and view all the answers

What are structures shared through common ancestry referred to as?

Homologies Signup and view all the answers

Why do organisms appear unchanged (in stasis) for long periods of time in the fossil record according to the text?

Organisms are well-suited to their environment Signup and view all the answers

What is the main mechanism responsible for producing changes in populations?

Natural selection Signup and view all the answers

Which basic component of natural selection states that organisms pass down traits to their offspring?

Inheritance of acquired characteristics Signup and view all the answers