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Evolutionary Concepts Quiz

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Questions and Answers

What is the selecting agent in natural selection?

The environment

Define adaptation in the context of evolution.

An inherited trait that increases chances of survival.

What is the result of natural selection?

Evolution

How do fossils provide evidence of evolution?

Fossils give us evidence of evolution by showing traces or remains of organisms preserved by nature. Signup and view all the answers

What is the difference between relative dating and absolute dating when determining the age of fossils?

Relative dating uses sedimentary rock layers to determine the age of fossils, while absolute dating uses radioactivity. Signup and view all the answers

Explain the concept of common ancestors in the context of evolution.

Present-day organisms have evolved from common earlier ancestors. Signup and view all the answers

Explain the three types of evidence of a common ancestor.

Anatomical similarities (homologous, analogous, vestigial structures), embryological similarities, molecular similarities Signup and view all the answers

What were the two points that led to disproving Lamarck's theory of inheritance of acquired traits?

The law of use and disuse, Inheritance of acquired characteristics Signup and view all the answers

Explain the concept of speciation and the two ways it can occur.

Speciation is the formation of two new species. It can occur through isolation or adaptive radiation. Signup and view all the answers

What are the two different ways in which evolution can happen?

Gradualism and punctuated equilibrium Signup and view all the answers

Where does variation in species come from?

Variation comes from sexual reproduction and mutations Signup and view all the answers

What is the purpose of a dichotomous key in classification?

A dichotomous key is used to identify organisms based on a series of choices leading to a classification. Signup and view all the answers